In the State of Texas it is called "indecency with a child." However, it is an affirmative defense to prosecution for such crime if: the victim is 14 years or older, the sexual contact was consensual, the person is of the opposite sex, within three (3) years of the victim age, and not a sexual offender already. It is commonly known as the Romeo and Juliet exception. (see TX Penal Code 21.11(b).
Legal disclaimer: My answers are only intended as general legal advice based on my experience. They are not intended to be a binding legal opinion nor to create an attorney-client relationship.