Why wont he be my boyfriend?

Honestly if I were you, I would ask him where he thought this was going and if we were in a relationship. If he gets angry or something, then tell him that you just got tired of being used & lead on and then having it lead to nowhere- that's not fair to you. I think it's weird that he would go this far with you and then not commit. Maybe he's shy and doesn't want to officially ask you out... but you never know. If he does reject you, of course it's going to hurt but it will be better for you to go ahead and find out what's going on then to have to find out later. Good luck and hopefully everything will work out!