Gustavo Bouvier Hernandez A/K/A Gustavo Bovier-Hernandez v. the State of Texas

CourtTexas Court of Appeals, 4th District (San Antonio)
DecidedFebruary 25, 2026
Docket04-24-00162-CR
StatusPublished

This text of Gustavo Bouvier Hernandez A/K/A Gustavo Bovier-Hernandez v. the State of Texas (Gustavo Bouvier Hernandez A/K/A Gustavo Bovier-Hernandez v. the State of Texas) is published on Counsel Stack Legal Research, covering Texas Court of Appeals, 4th District (San Antonio) primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Gustavo Bouvier Hernandez A/K/A Gustavo Bovier-Hernandez v. the State of Texas, (Tex. Ct. App. 2026).

Opinion

Fourth Court of Appeals San Antonio, Texas MEMORANDUM OPINION

No. 04-24-00162-CR

Gustavo Bouvier HERNANDEZ a/k/a Gustavo Bovier-Hernandez, Appellant

v.

The STATE of Texas, Appellee

From the 111th Judicial District Court, Webb County, Texas Trial Court No. 2021CRD001242D2 Honorable Monica Z. Notzon, Judge Presiding

Opinion by: Lori Massey Brissette, Justice

Sitting: Irene Rios, Justice Lori Massey Brissette, Justice Adrian A. Spears II, Justice

Delivered and Filed: February 25, 2026

AFFIRMED

Following a jury trial, appellant Gustavo Bouvier Hernandez 1 was convicted of aggravated

sexual assault of a child pursuant to Texas Penal Code section 22.021(a)(2)(B) and possession of

child pornography pursuant to Texas Penal Code section 43.26(a). See TEX. PEN. CODE §§

22.021(a)(2)(B), 43.26(a). On appeal, Bouvier contends the trial court erred in: (1) denying his

1 In the trial record, appellant is also referred to as “Gustavo Bouvier-Hernandez” or “Gustavo Bovier-Hernandez.” These spelling variations are immaterial to this appeal. See Martin v. State, 541 S.W.2d 605, 606 (Tex. Crim. App. 1976). 04-24-00162-CR

request for a jury instruction on a mistake of fact; (2) admitting improper opinion testimony; (3)

denying his motion to suppress his oral custodial statements; and (4) not providing a required jury

instruction on whether his oral custodial statements were involuntary. After reviewing the record

and the parties’ briefing, we affirm.

BACKGROUND

In August of 2021, Bouvier’s wife discovered an explicit video on his cell phone of Bouvier

performing a sexual act on an eight-year-old child who is his wife’s sister and their adoptive

daughter. The video is over a minute and a half long and captures Bouvier penetrating the child’s

mouth with his penis and giving her verbal instructions. After finding the video, Bouvier’s wife

called the police. Bouvier was arrested, and a Webb County grand jury returned a two-count

indictment charging him with aggravated sexual assault of a child (Count I) and possession with

intent to promote child pornography (Count II). The indictment was amended by court order,

changing Count II to possession of child pornography under Texas Penal Code section 43.26(a).

Before the jury trial, a two-day hearing was held on Bouvier’s motion to suppress his oral

statements made during a custodial interrogation conducted by Investigator Donna in which

Bouvier confessed to the sexual act but asserted he had believed the child victim was his adult

wife. At the conclusion of the hearing, the trial court denied the motion to suppress, and it issued

written findings of fact and conclusions of law.

At trial, the State presented five witnesses, including Investigator Donna and Bouvier’s

wife. The sexually explicit video was entered into evidence and viewed by the jury. Bouvier’s wife

testified that the child victim can be heard saying “no” in the video. She also testified that she

knows Bouvier is the man in the video because she has been married to Bouvier for over fifteen

years and she recognized his penis and voice in the video. She further testified that after

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discovering the video, she spoke with the child victim, who made an outcry to her that Bouvier

had sexually assaulted her two prior times. At trial, Bouvier testified, confessing that he engaged

in the sexual act with the child and filmed it on his phone, but stating that throughout the entire

recording he had believed the victim was his adult wife. Bouvier acknowledged that he had the

phone’s flashlight on throughout the recording, and he further acknowledged that he can be heard

in the video giving the child instructions.

The jury found Bouvier guilty on both counts of the indictment, and the jury assessed as

punishment stacked sentences of eighty years for Count I and ten years for Count II, along with a

$10,000 fine for each count. Bouvier timely appealed.

REQUEST FOR MISTAKE-OF-FACT JURY INSTRUCTION

At the jury charge conference, Bouvier requested a jury instruction for Count I, aggravated

sexual assault of a child, which stated that if the jury finds from the evidence that Bouvier

“reasonably believed that the act of penetrating the mouth of [the child] was a mistake of fact in

that he believed [the child] was his wife” then the jury “will acquit” Bouvier. Bouvier contends

that the trial court’s denial of his request for a mistake-of-fact jury instruction constitutes reversible

error.

Under Texas Penal Code section 8.02, it is a defense to prosecution that a defendant formed

a reasonable mistaken belief only if “his mistaken belief negated the kind of culpability required

for commission of the offense.” TEX. PEN. CODE § 8.02(a); see Mays v. State, 318 S.W.3d 368,

382 (Tex. Crim. App. 2010) (explaining that mistake-of-fact defense does not apply unless

defendant was mistaken about a specific historical fact that, if true, would negate the mental state

required for conviction). The trial court properly denied Bouvier’s request for this instruction

because the purported mistake of fact does not negate any mental state required for conviction. A

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person commits the offense of aggravated sexual assault of a child if, (1) “regardless of whether

the person knows the age of the child at the time of the offense,” intentionally or knowingly

“causes the penetration of the mouth of a child by the sexual organ of the actor” or “causes the

mouth of a child to contact” the sexual organ of the actor; and (2) “the victim is younger than 14

years of age, regardless of whether the person knows the age of the victim at the time of the

offense.” TEX. PEN. CODE § 22.021(a). “Because Section 22.021 requires no culpability as to the

age of the victim, there is nothing for the defendant’s mistaken belief to negate, and his mistake

cannot be a defense to prosecution.” Fleming v. State, 455 S.W.3d 577, 582 (Tex. Crim. App.

2014) (citing TEX. PEN. CODE § 8.02(a)). The Fleming court further concluded that section 22.021

is not unconstitutional for failing to recognize an affirmative defense based on a defendant’s belief

that the victim was 17 years of age or older. Id. at 583; see Arias v. State, 503 S.W.3d 523, 530

(Tex. App.—San Antonio 2016, pet. ref’d).

Bouvier’s argument—that he mistakenly believed his conduct was lawful because he

believed the victim was his wife—does not entitle him to a mistake-of-fact jury instruction. See

Fleming, 455 S.W.3d at 582–83; Miller v. State, 605 S.W.3d 877, 882 (Tex. App.—Houston [1st

Dist.] 2020, pet. ref’d) (“A defendant’s mistaken belief that his conduct was lawful is not a mistake

of fact” and does not require a jury instruction). Therefore, the trial court did not err by denying

Bouvier’s request for this instruction. We overrule Bouvier’s first issue.

ADMISSION OF INVESTIGATOR’S TESTIMONY

In his second issue, Bouvier argues the trial court erred in permitting improper opinion

testimony from Investigator Donna as to the truthfulness of Bouvier’s mistake-of-fact defense. The

State contends Bouvier failed to preserve this issue.

-4- 04-24-00162-CR

To preserve a complaint for appellate review, the complaining party must present a timely

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