Unfortunately if that is the way he feels chances are that will not change at this point as he is at a certain age and is interested in girls his age and older - not younger. Its best to let him be as you may start seeming a nuisance to him as well as a needy teenager.

Girl, I'm sorry but he is treating you the way a 22 year old should be treating 17 year old girl. He could go to jail so he is doing the right thing. he might actually like you but the best thing for you to do is 2 move on