It depends on what you mean by relationship. I'm assuming you mean a sexual relationship and I think it's illegal in all states if one person is 18 or over and the other is under 18.
No
No it is illegal. In Alabama you are considered a adult at 19. The best thing for you to do is let him go.
There are no laws about dating. She could get in trouble if there is sexual contact.
no
I'd say go for it, as long as you use condoms.
No because that is illegal.
It depends on what state you are in, but generally No.
no. no.
Yes it is illegal in the state of New York to have sex with a 15 year old as she is a minor.
No way
No it is illegal.
It is not illegal for you to date. However, if he were to go further than holding hands, he could get into trouble. The age of consent is 16.