Is It Illegal to Cheat on Your Spouse in Texas? Criminal Implications

No criminal liability under Texas law

Texas decriminalized adultery decades ago. The Texas Penal Code does not contain any provision making extramarital sexual conduct between consenting adults a crime. This is true regardless of:

• Whether you or your partner is married to someone else
• Whether your spouse knows or has consented to the conduct
• Whether the conduct occurred in private or quasi-public settings
• Whether the affair is ongoing or one-time

Police have no authority to arrest based on extramarital sexual conduct. Anyone — including a private investigator, attorney, or the wronged spouse — threatening criminal consequences for adultery is wrong about Texas law.

Limited criminal exposures that touch on relationships:

• Bigamy — Penal Code §25.01 (purporting to marry while already married). Third-degree felony.
• Sexual conduct with minors — Multiple Penal Code provisions apply if the affair partner is underage. The defendant's marital status doesn't change the underlying offense.
• Adult prostitution — If money changes hands. Penal Code §43.02.

None of these criminalize the underlying adult-with-adult extramarital relationship.

Civil divorce consequences

Cheating produces real consequences in Texas divorce proceedings under the Family Code framework. Texas Family Code §6.003 lists adultery as a "fault ground" for divorce. Filing on adultery as a fault ground rather than the standard "insupportability" no-fault ground can affect:

Property division. Texas is a community property state, but divisions are not required to be 50-50. Family Code §7.001 directs the court to make a "just and right" division. Adultery is one of the factors a court can consider in giving the wronged spouse a larger share of the community estate.

Spousal maintenance. Texas Family Code Chapter 8 governs post-divorce spousal support. Adultery is a factor in eligibility and amount.

Wasted community assets. Money spent on the affair partner (gifts, hotel rooms, trips, jewelry) can be treated as "constructive fraud" on the community estate. The wronged spouse can recover those amounts from the offending spouse's share at division.

Child custody. Family Code §153.002 uses "best interest of the child" as the standard. Adultery alone does not affect custody. The circumstances of an affair (involving children, exposing children to inappropriate situations, neglect of parental duties) can be relevant.

How to prove cheating in Texas divorce

Texas requires "clear and positive" evidence of adultery for fault-ground purposes — a higher standard than the typical "preponderance of the evidence." Most cases rely on circumstantial evidence rather than direct testimony:

• Romantic communications (texts, emails, social media DMs)
• Hotel and travel records
• Financial records showing affair-related spending
• Witness testimony about behavior consistent with romantic involvement
• Photographic or video evidence
• Phone records showing extensive communication patterns
• Admissions or written confessions

Texas courts generally do not require direct evidence of sexual activity. Patterns of behavior, communication, and financial expenditure consistent with an affair are sufficient under Texas case law applying the "clear and positive" standard.

Practical reality: most divorce-attorney work in adultery proof comes from:

• Forensic review of phones, computers, and electronic records
• Subpoenas of credit card statements, hotel records, travel records
• Testimony of friends, coworkers, or neighbors who observed behavior
• Private investigator surveillance (where lawful)