No, sibling dating is not explicitly criminalized in Belgium, but incestuous relationships—including those between siblings—are strictly regulated under civil and family law, particularly concerning marriage and parental rights. The Belgian Civil Code prohibits marriage between siblings (Article 161), and courts may intervene in cohabitation arrangements if they deem the relationship harmful to minors or public order. While consensual adult sibling relationships are not prosecuted under criminal law, local social services (e.g., Kind en Gezin in Flanders) and the Federale Overheidsdienst Justitie monitor familial dynamics for potential abuse or coercion risks.
Key Regulations for Dating Siblings in Belgium
- Marriage Prohibition: Article 161 of the Belgian Civil Code explicitly forbids marriage between siblings, including half-siblings, adoptive siblings, and full siblings.
- Parental Rights Restrictions: Courts may revoke or limit parental authority (under the Codex Familiaris) if a sibling relationship is deemed detrimental to a child’s welfare, even in non-marital cohabitation scenarios.
- Social Services Oversight: Agencies like Kind en Gezin (Flanders) and ONE (Wallonia-Brussels) can investigate living arrangements involving siblings if reports of emotional or physical harm arise, triggering safeguarding protocols.
Post-2023 reforms to the Wetboek van Strafrecht (Criminal Code) reinforced protections against familial abuse, though consensual adult sibling relationships remain outside criminal liability unless coercion or dependency is proven. Legal ambiguity persists in areas like inheritance rights, where courts may invalidate bequests between siblings if the relationship violates “public morals” (Article 900 of the Civil Code). Consultation with a familierechter (family court judge) is advised for high-risk cases.