Peters, C. J.
The principal issue in this appeal is whether the trial court improperly excluded evidence offered by the defendant on the issue of the source of semen found inside the complainant on the night she was allegedly sexually assaulted. After a jury trial, the [347]*347defendant, Robert Rinaldi, was convicted of sexual assault in the first degree in violation of General Statutes § 53a-70, sexual assault in the second degree in violation of General Statutes § 53a-71 (a) (1), and kidnapping in the first degree in violation of General Statutes § 53a-92 (a) (2) (A).1 The trial court rendered a judgment sentencing the defendant to a term of imprisonment of fifteen years, suspended after ten years, and placing him on probation for three years. The defendant appealed directly to this court pursuant to General Statutes § 51-199 (b) (3). We reverse and remand for a new trial.
The jury reasonably could have found the following facts. On June 21,1989, the complainant, who was then fourteen years old, and two friends, Ronald and Colleen, were drinking beer and rum at the Waterbury apartment of the complainant’s father. The complainant spoke by telephone to another friend, Dino, and arranged to meet him. The three friends got a ride to Dino’s house and then they all walked to Fairlawn Park. The complainant and Dino soon left the other [348]*348two and went to the rear of the park where they remained alone for approximately fifteen minutes to one-half hour. After their reappearance, Dino departed, leaving the complainant upset. The other three then returned to Dino’s house.
While the three friends were standing in front of Dino’s house, the defendant and a male passenger2 drove by in the defendant’s sports car. The defendant stopped his car and spoke with Ronald, with whom he was acquainted. At some point, the complainant’s father also drove up in his car. After an argument between the complainant and her father, the complainant ran and hid behind some bushes on the side of Dino’s house. Her father then drove away.
The defendant subsequently agreed to drive the three friends home. They got into the back seat of the car and the defendant drove to a nearby gas station, where the complainant’s friends got out of the car. The complainant also tried to leave, but was forcibly prevented from doing so by the passenger in the defendant’s car. As the car departed, the complainant screamed for help. Her friends chased the car but were unable to catch it. Two patrons at the gas station also noticed the car and heard the complainant screaming.
The defendant drove the car to a parking lot, where he and his passenger engaged in forced sexual intercourse with the complainant. They then threw the com[349]*349plainant into the back of the car and drove to another parking lot. The witnesses at the gas station, who had once again spotted the defendant’s car, followed the car into the second parking lot and watched as the complainant was thrown from the defendant’s car. The complainant’s clothes had been partially removed and she told the witnesses that she had been raped. The complainant was returned to her home and, shortly thereafter, was taken by her father to Waterbury Hospital.
At the hospital, the examining physician found a cigarette burn on the complainant’s cheek, a superficial laceration on her right forearm, and some grass in her pubic hair and near the entrance of her vagina. The complainant’s mother, who was with her daughter at the hospital, noticed grass on her daughter’s buttocks. A screening for alcohol and drugs indicated the presence of alcohol, marihuana and cocaine in the complainant’s system. A technician employed by the Connecticut state police forensic laboratory analyzed the components of a sex crime kit prepared by the examining physician and determined that semen was present on the vaginal smear and in the crotch area of the complainant’s underpants. Because the defendant, his passenger and the complainant all had the same blood type, the technician could not determine or identify the source of the semen.
The jury also heard the contrary testimony of the defendant, who denied having had sexual intercourse with the complainant at any time. According to the defendant, in the confrontation involving the complainant’s father at Dino’s house, the father threatened to shoot the defendant and his friend if they went near his daughter or his house. The defendant testified that after the complainant’s friends got out of his car at the gas station, the complainant asked him to drive her home. As he drove toward her home he noticed a car [350]*350following closely behind him. The driver was blinking the car’s lights and honking its horn. Believing that the car belonged to the complainant’s father, and recalling his previous threats, the defendant pulled into a parking lot, dropped the complainant off and drove away. The jury apparently disbelieved the defendant, because it convicted him on all counts.
In his appeal, the defendant raises three claims. He maintains that he is entitled to a new trial because the trial court improperly: (1) precluded the defendant from eliciting evidence regarding the source of the semen found in the complainant; (2) precluded the defendant from eliciting evidence regarding a comparison of a pubic hair found on the complainant’s blouse; and (3) ordered defense counsel not to refer in his summation to the possibility that the complainant had had sexual intercourse with Dino at the park. We agree with the first of these claims.
I
At trial the defendant moved for permission to present evidence that the complainant had engaged in sexual intercourse with someone other than the defendant on the night of the alleged sexual assault. He offered this evidence pursuant to General Statutes § 54-86f,3 known as the Rape Victims Shield Law. [351]*351Although this statute limits the admissibility of evidence of a sexual assault victim’s prior sexual conduct, such evidence is admissible under subsection (1) of the statute “on the issue of whether the defendant was, with respect to the victim, the source of semen.” In compliance with § 54-86f, the defendant submitted a written motion containing an offer of proof. At the hearing on this motion conducted outside the presence of the jury, the defendant presented the proposed testimony of the complainant’s friend Colleen concerning events that transpired on the evening of June 21,1989.
A
Colleen testified at the hearing that she overheard the complainant tell Dino over the telephone that she wanted to have sexual intercourse with him.4 She further testified that after she, the complainant, Ronald and Dino had walked to Fairlawn Park, Dino and the complainant had kissed and gone off by themselves toward a slide in the back of the park. They remained alone together for approximately twenty minutes to one-half hour. Colleen testified that she subsequently called for the complainant, who emerged from the back of the park with her pants unbuttoned. After Dino had walked away, the complainant told Colleen: “I finally [352]*352got it.” In response to Colleen’s question to the complainant: “Are you happy now?” the complainant answered, “Yes.”5
The trial court heard the proffered oral testimony and then ruled upon each paragraph of the defendant’s written offer of proof.
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Peters, C. J.
The principal issue in this appeal is whether the trial court improperly excluded evidence offered by the defendant on the issue of the source of semen found inside the complainant on the night she was allegedly sexually assaulted. After a jury trial, the [347]*347defendant, Robert Rinaldi, was convicted of sexual assault in the first degree in violation of General Statutes § 53a-70, sexual assault in the second degree in violation of General Statutes § 53a-71 (a) (1), and kidnapping in the first degree in violation of General Statutes § 53a-92 (a) (2) (A).1 The trial court rendered a judgment sentencing the defendant to a term of imprisonment of fifteen years, suspended after ten years, and placing him on probation for three years. The defendant appealed directly to this court pursuant to General Statutes § 51-199 (b) (3). We reverse and remand for a new trial.
The jury reasonably could have found the following facts. On June 21,1989, the complainant, who was then fourteen years old, and two friends, Ronald and Colleen, were drinking beer and rum at the Waterbury apartment of the complainant’s father. The complainant spoke by telephone to another friend, Dino, and arranged to meet him. The three friends got a ride to Dino’s house and then they all walked to Fairlawn Park. The complainant and Dino soon left the other [348]*348two and went to the rear of the park where they remained alone for approximately fifteen minutes to one-half hour. After their reappearance, Dino departed, leaving the complainant upset. The other three then returned to Dino’s house.
While the three friends were standing in front of Dino’s house, the defendant and a male passenger2 drove by in the defendant’s sports car. The defendant stopped his car and spoke with Ronald, with whom he was acquainted. At some point, the complainant’s father also drove up in his car. After an argument between the complainant and her father, the complainant ran and hid behind some bushes on the side of Dino’s house. Her father then drove away.
The defendant subsequently agreed to drive the three friends home. They got into the back seat of the car and the defendant drove to a nearby gas station, where the complainant’s friends got out of the car. The complainant also tried to leave, but was forcibly prevented from doing so by the passenger in the defendant’s car. As the car departed, the complainant screamed for help. Her friends chased the car but were unable to catch it. Two patrons at the gas station also noticed the car and heard the complainant screaming.
The defendant drove the car to a parking lot, where he and his passenger engaged in forced sexual intercourse with the complainant. They then threw the com[349]*349plainant into the back of the car and drove to another parking lot. The witnesses at the gas station, who had once again spotted the defendant’s car, followed the car into the second parking lot and watched as the complainant was thrown from the defendant’s car. The complainant’s clothes had been partially removed and she told the witnesses that she had been raped. The complainant was returned to her home and, shortly thereafter, was taken by her father to Waterbury Hospital.
At the hospital, the examining physician found a cigarette burn on the complainant’s cheek, a superficial laceration on her right forearm, and some grass in her pubic hair and near the entrance of her vagina. The complainant’s mother, who was with her daughter at the hospital, noticed grass on her daughter’s buttocks. A screening for alcohol and drugs indicated the presence of alcohol, marihuana and cocaine in the complainant’s system. A technician employed by the Connecticut state police forensic laboratory analyzed the components of a sex crime kit prepared by the examining physician and determined that semen was present on the vaginal smear and in the crotch area of the complainant’s underpants. Because the defendant, his passenger and the complainant all had the same blood type, the technician could not determine or identify the source of the semen.
The jury also heard the contrary testimony of the defendant, who denied having had sexual intercourse with the complainant at any time. According to the defendant, in the confrontation involving the complainant’s father at Dino’s house, the father threatened to shoot the defendant and his friend if they went near his daughter or his house. The defendant testified that after the complainant’s friends got out of his car at the gas station, the complainant asked him to drive her home. As he drove toward her home he noticed a car [350]*350following closely behind him. The driver was blinking the car’s lights and honking its horn. Believing that the car belonged to the complainant’s father, and recalling his previous threats, the defendant pulled into a parking lot, dropped the complainant off and drove away. The jury apparently disbelieved the defendant, because it convicted him on all counts.
In his appeal, the defendant raises three claims. He maintains that he is entitled to a new trial because the trial court improperly: (1) precluded the defendant from eliciting evidence regarding the source of the semen found in the complainant; (2) precluded the defendant from eliciting evidence regarding a comparison of a pubic hair found on the complainant’s blouse; and (3) ordered defense counsel not to refer in his summation to the possibility that the complainant had had sexual intercourse with Dino at the park. We agree with the first of these claims.
I
At trial the defendant moved for permission to present evidence that the complainant had engaged in sexual intercourse with someone other than the defendant on the night of the alleged sexual assault. He offered this evidence pursuant to General Statutes § 54-86f,3 known as the Rape Victims Shield Law. [351]*351Although this statute limits the admissibility of evidence of a sexual assault victim’s prior sexual conduct, such evidence is admissible under subsection (1) of the statute “on the issue of whether the defendant was, with respect to the victim, the source of semen.” In compliance with § 54-86f, the defendant submitted a written motion containing an offer of proof. At the hearing on this motion conducted outside the presence of the jury, the defendant presented the proposed testimony of the complainant’s friend Colleen concerning events that transpired on the evening of June 21,1989.
A
Colleen testified at the hearing that she overheard the complainant tell Dino over the telephone that she wanted to have sexual intercourse with him.4 She further testified that after she, the complainant, Ronald and Dino had walked to Fairlawn Park, Dino and the complainant had kissed and gone off by themselves toward a slide in the back of the park. They remained alone together for approximately twenty minutes to one-half hour. Colleen testified that she subsequently called for the complainant, who emerged from the back of the park with her pants unbuttoned. After Dino had walked away, the complainant told Colleen: “I finally [352]*352got it.” In response to Colleen’s question to the complainant: “Are you happy now?” the complainant answered, “Yes.”5
The trial court heard the proffered oral testimony and then ruled upon each paragraph of the defendant’s written offer of proof. The court excluded the testimony “that the victim told [Colleen] . . . how bad she wanted to get laid or—and the language she used here today” as not constituting evidence of sexual conduct. It ruled admissible the proffered testimony that the complainant spoke with Dino on the telephone, made plans to meet him, met him, walked to the park with him and walked into the woods at the back of the park alone with Dino. The court excluded testimony of the complainant’s statement, “I finally got it,” ruling that it was hearsay evidence, and excluded testimony that the complainant’s pants were unbuttoned as “not evidence that there was any semen transferred from Dino to the victim.” The defendant took an exception to the court’s rulings. Following a recess, the trial court further stated that it found the excluded evidence to be more prejudicial than probative.
The defendant claims on appeal that the exclusion of the proffered evidence violated his right to present [353]*353a defense and to confront witnesses against him as guaranteed by the sixth and fourteenth amendments to the United States constitution; Pointer v. Texas, 380 U.S. 400, 85 S. Ct. 1065, 13 L. Ed. 2d 923 (1965); and by article first, § 8 of the constitution of Connecticut. We decline, however, to reach the defendant’s constitutional claims because we conclude that the trial court’s rulings violated § 54-86f. “ ‘We thus follow the recognized policy of self-restraint and the basic judicial duty to eschew unnecessary determinations of constitutional questions.’ ” State v. Gold, 180 Conn. 619, 639, 431 A.2d 501, cert. denied, 449 U.S. 920, 101 S. Ct. 320, 66 L. Ed. 2d 148 (1980), citing Pepin v. Danbury, 171 Conn. 74, 88, 368 A.2d 88 (1976).
The trial court’s first conclusion was that the proffered statement “I want to fuck you” or “I want to fucking do you” did not meet the requirements of § 54-86f6 because it did not provide evidence of sexual conduct. The court’s ruling was, in effect, that the statement was insufficiently relevant to the issue of the complainant’s alleged sexual conduct with Dino in the park. “One fact is relevant to another fact whenever, according to the common course of events, the existence of the one, taken alone or in connection with other facts, renders the existence of the other either certain or more probable.” (Internal quotation marks omitted.) State v. Kelly, 208 Conn. 365, 376, 545 A.2d 1048 (1988); State v. Mastropetre, 175 Conn. 512, 521, 400 A.2d 276 (1978); State v. Lombardo, 163 Conn. 241, 243, 304 A.2d 36 (1972). To be relevant, the evidence need not exclude all other possibilities; it is sufficient if it tends to support the conclusion, even to a slight degree. State v. Miller, 202 Conn. 463, 482, 522 A.2d 249 (1987); State v. Briggs, 179 Conn. 328, 426 A.2d 298 [354]*354(1979), cert. denied, 447 U.S. 912, 100 S. Ct. 3000, 64 L. Ed. 2d 862 (1980). “Although the trial court has wide discretion in its rulings on the relevancy of evidence . . . its rulings will be reversed if the court has abused its discretion or where injustice appears to have been done.” State v. Echols, 203 Conn. 385, 393, 524 A.2d 1143 (1987); State v. Smith, 198 Conn. 147, 157, 502 A.2d 874 (1985).
We disagree with the trial court’s characterization of this evidence and conclude that it is indeed evidence of sexual conduct. Section 54-86f encompasses inferential as well as direct evidence of sexual conduct. There is a sufficient relationship between the proffered evidence and the sexual conduct sought to be proved that a reasonable juror could infer from the statement that Dino and the complainant had engaged in sexual intercourse on June 21, 1989. This inference is reinforced by other facts in evidence, such as the appearance of the complainant’s clothing when she emerged from the rear of the park and the discovery of the presence of grass on her buttocks, and in her pubic hair and vagina found during the medical examination.
Presumptively, § 54-86f excludes evidence of the sexual conduct of the victim of a sexual assault. The question therefore is whether the evidence in this case falls within one of the exceptions contained in the statute. Before the defendant made his offer of proof, the state had introduced evidence that an analysis of the vaginal swab taken at the hospital on the night of the alleged sexual assault indicated the presence of sperm in the complainant’s vagina. The defendant expressly offered Colleen’s testimony “on the issue of whether the defendant was, with respect to the victim, the source of semen, disease, pregnancy or injury.” General Statutes § 54-86f (1). Understate v. Mastropetre, supra, 519, the proffered evidence of sexual activity is admissible if it offers an explanation for the source [355]*355of the semen found in the complainant. Colleen’s testimony could have persuaded the jury to infer that the semen was transferred when the complainant and Dino had engaged in sexual intercourse. Because subsection (1) of the rape shield statute specifically exempts evidence offered on the source of semen when that question becomes an issue at trial, the admissibility of Colleen’s statement was not automatically barred by that statute.
We turn now to the proffered testimony regarding the appearance of the complainant’s clothing when she emerged from the rear of the park with Dino. The court apparently excluded this testimony as irrelevant to the issue of the source of the semen. We disagree. Like the testimony regarding the complainant’s telephone conversation with Dino, the proffered evidence that the complainant’s pants were unbuttoned upon her emergence from the rear of the park was relevant to the issue of whether she and Dino had engaged in sexual intercourse. Again, a jury could reasonably infer that this act of sexual intercourse resulted in the transfer of semen to the complainant. In light of the fact that the state had introduced the evidence of the semen found inside the complainant’s vagina, the proffered testimony fell within the exception delineated in subsection (1) of § 54-86f.
The trial court buttressed its decision to exclude the proffered evidence by a finding, as authorized by § 54-86f, that the probative value of the evidence was outweighed by its prejudicial effect on the victim. “[T]he determination of whether the prejudicial impact of evidence outweighs its probative value is left to the sound discretion of the trial court judge and is subject to reversal only where an abuse of discretion is manifest or injustice appears to have been done.” State v. Braman, 191 Conn. 670, 681-82, 469 A.2d 760 (1983); State v. Tucker, 181 Conn. 406, 416, 435 A.2d 986 (1980).
[356]*356This court has previously enumerated situations in which the potential prejudicial effect of relevant evidence would counsel its exclusion. Evidence should be excluded as unduly prejudicial: (1) where it may unnecessarily arouse the jury’s emotions, hostility or sympathy; (2) where it may create distracting side issues; (3) where the evidence and counterproof will consume an inordinate amount of time; and (4) where one party is unfairly surprised and unprepared to meet it. State v. DeMatteo, 186 Conn. 696, 702-703, 443 A.2d 915 (1982). The proffered testimony does not pose any of these dangers.
The prejudice sought to be avoided through the rape shield statute extends, however, beyond those listed above. When balancing the probative value of evidence of a sexual assault victim’s prior sexual conduct against its prejudicial effect on the victim, the court should also consider whether the evidence invades the victim’s sexual privacy, whether it is unnecessarily harassing, and whether it will subject the victim to undue embarrassment. See State v. Williams, 20 Conn. App. 263, 270, 565 A.2d 1365 (1989).
The evidence offered in this case is highly probative of a critical piece of evidence introduced by the state, namely the presence of semen in the complainant following the alleged sexual assault. Colleen’s testimony could greatly have lessened the impact the state’s evidence had on the jury. The centrality of this issue distinguishes this case from others in which sexual conduct evidence has been excluded. See, e.g., State v. Franko, 199 Conn. 481, 484-85, 508 A.2d 22 (1986) (question whether complainant was a virgin prior to sexual assault properly excluded as irrelevant); State v. Mastropetre, supra, 514 (question whether complainant had had sexual relations with anyone prior to sexual assault properly excluded as irrelevant). A more closely analogous case is Demers v. State, 209 Conn. 143, 547 A.2d [357]*35728 (1988), in which this court concluded that evidence of a victim’s prior prostitution arrest was admissible under subsection (4) of § 54-86f as it was relevant to the substantive issue of consent raised by the defendant. In this case, similarly, Colleen’s testimony would have shed light on a substantive issue in the case.
In weighing the possible prejudicial effect of the proffered testimony, the trial court should have also considered what the testimony did not purport to establish. The defendant was not impugning the complainant’s character in front of the jury by introducing lurid details of prior sexual behavior. Rather, it was offered to provide an alternative explanation for an important piece of objective evidence introduced by the state. This is precisely the type of evidence the legislature intended to allow an accused sexual offender to offer in his defense. We therefore conclude that the trial court abused its discretion, in violation of § 54-86f, by excluding as prejudicial the proffered testimony offered by the defendant.
The state urges us to conclude that any error in excluding this testimony was harmless. “When a trial error in a criminal case does not involve a constitutional violation the burden is on the defendant to demonstrate the harmfulness of the error.” State v. Flanders, 214 Conn. 493, 502, 572 A.2d 983, cert. denied, U.S. , 111 S. Ct. 260, 112 L. Ed. 2d 217 (1990); State v. Ruth, 181 Conn. 187, 196-97, 435 A.2d 3 (1980). The defendant must demonstrate “that the erroneous action of the trial court would have been likely to affect the result.” State v. Flanders, supra; State v. Castonguay, 218 Conn. 486, 505, 590 A.2d 901 (1991).
We are persuaded that the exclusion of Colleen’s testimony, in all likelihood, affected the jury’s verdict against the defendant. The state introduced into evidence the presence of semen to provide crucial inde[358]*358pendent and objective proof that sexual intercourse had occurred. This evidence was critical to corroborate the claimed sexual assault. Presented with diametrically opposed versions of what occurred on June 21, 1989, between the complainant and the defendant, the jury very likely gave great weight to the fact that semen was detected during the examination of the complainant. Without any evidence from which to infer that the complainant might have had sexual intercourse, only shortly before, with someone other than the defendant, it is probable that the jury would have disbelieved the defendant’s denial of sexual intercourse with the complainant. Disbelief of the defendant on this crucial issue would probably have persuaded the jury to disbelieve the defendant’s testimony in its entirety, and to attach sufficient credence to the alternative explanation of what had transpired to find the defendant guilty beyond a reasonable doubt. We therefore conclude that the trial court’s error was harmful. Because the exclusion of this testimony was likely to have affected the jury’s verdict on the three charges of which the defendant was convicted, we reverse the trial court’s judgment as to all charges and remand for a new trial.7
[359]*359B
The defendant further claims that the trial court improperly excluded Colleen’s testimony that the complainant made the statement “I finally got it” when she emerged from the rear of the park. The court disallowed this testimony, not because it was barred by the rape shield statute, but rather because it was inadmissible hearsay. Hearsay is an out-of-court statement offered into evidence to establish the truth of the matters contained therein. State v. Cruz, 212 Conn. 351, 356, 562 A.2d 1071 (1989). The trial court ruled that this statement was offered for the purpose of proving the truth of the defendant’s allegations that the complainant had engaged in sexual intercourse with Dino. The defendant took an exception to the trial court’s ruling.
The defendant now contends that, although hearsay, the statement constituted a spontaneous utterance, a recognized exception to the hearsay rule. A key requisite to this exception is that the statement must follow a startling event, that is, “one of such a nature as to produce nervous excitement in the declarant and render his utterances spontaneous and unreflecting.” C. Tait & J. LaPlante, Handbook of Connecticut Evidence (2d Ed. 1988) § 11.11.2, pp. 373-74. Without more details as to what actually transpired between Dino and the complainant in the park, we cannot determine whether the requirements of this exception have been met. Thus, upon the basis of the record before us, we conclude that the trial court did not abuse its discretion in excluding the proffered testimony concerning the statement on hearsay grounds.
II
Although we have concluded that a new trial will be necessary, we will address the defendant’s second claim [360]*360because the issue may arise at retrial. At trial, the defendant sought to have Mary Beth Guman, a state police laboratory technician, testify that a pubic hair taken from the complainant’s blouse possessed characteristics similar to a pubic hair sample taken from Dino. The defendant offered the evidence as tending to show that Dino had committed the crime for which the defendant was charged. The defendant asserted that this piece of evidence was admissible, regardless of whether it related to sexual conduct, because it would have supported charging Dino with a violation of General Statutes § 53a-71 (a) (1), which criminalizes engaging in sexual intercourse with another person under the age of sixteen. The court ultimately excluded the evidence as irrelevant and speculative.
We agree with the trial court’s ruling that the evidence was inadmissible on the ground on which it was offered. It was entirely reasonable for the trial court to determine, in the exercise of its discretion, that evidence of an alleged violation of § 53a-71 (a) (1) by Dino had no relevance to whether the defendant violated § 53a-71 (a) (1) at a different time and in a different place.8 The rules of relevancy govern the presentation and admissibility of evidence tending to show that a [361]*361third party, and not the defendant, committed the crime with which the defendant is charged. State v. Milner, 206 Conn. 512, 517, 539 A.2d 80 (1988); State v. Echols, 203 Conn. 385, 392, 524 A.2d 1143 (1987). To be admissible, the evidence must show more than motive or bare suspicion; it must directly connect the third party to the crime charged. State v. Milner, supra. “Generally, the evidence must demonstrate that guilt in the other party is inconsistent with guilt in the accused.” State v. Delossantos, 211 Conn. 258, 270, 559 A.2d 164, cert. denied, 493 U.S. 866, 110 S. Ct. 188, 107 L. Ed. 2d 142 (1989). The trial court did not abuse its discretion in ruling as it did.
The question that remains is whether we should decide, at this juncture, the admissibility of the pubic hair comparison on a ground other than that raised by the defendant at trial. Such an alternative would not, of course, invalidate the trial court’s ruling. “ ‘Error does not lie in the exclusion of evidence claimed on an inadmissible ground even though it might have been admissible had it been claimed on another and different ground.’ ” Mays v. Mays, 193 Conn. 261, 268, 476 A.2d 562 (1984), quoting Johnson v. Rockaway Bus Corporation, 145 Conn. 204, 210, 140 A.2d 708 (1958). At a retrial in which the court admits the evidence on the issue of the source of the semen discussed in Part I of this opinion, the defendant might, however, offer this testimony to buttress his assertion that the complainant had engaged in sexual conduct with Dino.9 In such an event the trial court will have to exercise its discretion to determine the admissibility of that evidence on this ground.
[362]*362III
We decline to reach the defendant’s third claim of error, which concerns the court’s refusal to allow the defendant to suggest in his closing argument that the complainant and Dino had engaged in sexual intercourse prior to the alleged sexual assault. Our ruling that evidence of such conduct should not have been omitted makes it unlikely that such an issue will arise at retrial.
The judgment is reversed and the case is remanded for a new trial in accordance with this opinion.
In this opinion the other justices concurred.