How can I stop thinking about my crush?

Here's my problem... There's this guy I like and he has a girlfriend. Funny thing is I don't know him thing is I was attracted to him even before we met. We'd walk by eachother and give eachother these glances. The first time I met him was probably one of the best moments of my life. This kind of thing has never happened to me. And once again.. he as a girlfriend as much as I've tried hating him and forgetting him, all I can do is think about him. What do you think I should do?

Tell him you like him!
The worst he can say is...' I want to be just friends'
then you move on
plus make him promise he want tell his girlfriend
maybe he likes you 2 but is 2 afraid to tell u
so he has to stsick wit this current girlfriend or no girlfriend \.

Xhoped I helpedXXX

Your still young. You will have many crushes, but he has a girlfriend. You should respect that, and keep your feelings to yourself. When/if he becomes available, if your still crushing on him, then you can pour your heart out.

I think you should keep your feelings to yourself too. I don't think you'd be very happy if you were dating a guy and some other girl told him that she had feelings for him. I know I'd be pretty pissed off. If he does like you, maybe when he becomes available things will work out. Until then, I say you leave him alone.