His 21 and IM 17

He takes my virginity and then I asking what about a relationship he tell me " glo up and wait til im 18 " because he grown. My heart hurts but I'm emotionally  physically attached to him. I've told him everything. I trusted him. I know time heals a broken heart but is there something else I can do to get my mind off him I work volunteer marching band. I want him out my head. Like ugh.