No. Missouri law strictly prohibits incestuous relationships, including dating between siblings, under § 568.020 RSMo. Convictions may result in felony charges, with penalties up to 7 years imprisonment and mandatory sex offender registration if sexual contact occurs. The Missouri State Highway Patrol’s 2026 enforcement guidelines emphasize zero tolerance for familial sexual conduct, aligning with federal Title 18 U.S.C. § 2241(c) for interstate implications.
Key Regulations for Dating Siblings in Missouri
- Statutory Incest Prohibition: § 568.020 RSMo criminalizes “sexual intercourse” or “deviate sexual intercourse” between siblings, including half-siblings, with felony classifications. Dating without intercourse remains unaddressed but may violate public decency laws if deemed “lewd conduct.”
- Age and Consent Thresholds: Even if no intercourse occurs, § 568.090 RSMo prohibits sexual contact with minors under 17 by relatives, including siblings. The Missouri Department of Social Services’ 2025 circular clarifies that “dating” minors by siblings triggers mandatory reporting to child protective services.
- Federal Overlaps: The FBI’s 2026 Interstate Incest Task Force targets cases involving Missouri residents crossing state lines, invoking 18 U.S.C. § 2423 (transportation for illegal sexual activity) if siblings travel together for such purposes. Local prosecutors in St. Louis and Kansas City prioritize these cases under joint state-federal task forces.