Bigamy is a felony of the third degree. It shall be a defense to bigamy that the accused reasonably believed he and the other person were legally eligible to remarry. A person is guilty of incest when, under circumstances not amounting to rape, rape of a child or aggravated sexual assault, he has sexual intercourse with a person whom he knows to be an ancestor, descendant, brother, sister, uncle, aunt, nephew, niece, or first cousin. The relationships referred to herein include blood relationships of the whole or half blood without regard to legitimacy, relationship of parent and child by adoption, and relationship of stepparent and stepchild while the marriage creating the relationship of a stepparent and stepchild exists. A married person commits adultery when he voluntarily has sexual intercourse with a person other than his spouse.
Fornication is a class B misdemeanor.