If you and the young man are sexually active together he may be guilty of a felony in most states. That means, if a complaint is brought and sustained against him, he will have to register as a sex offender under Megan's Law and that will follow him the rest of his life.
I understand young love, but you two need to be very careful. If you are as mature as you think you are, and seem to be from your request for an answer, PLEASE stop, If you have sex STOP. If you haven't, DON'T START.
Seek an older friend or relative (Mom?) or aunt or cousin to talk this over with you. By taking charge of this relationship, you are demonstrating mature judgement, and ACTIVELY loving your boyfriend, and yourself. Good luck.