HELP ME ! How to get over a guy?

I really want to get over him. I've liked him since December, and we used to talk a lot. But we stopped then started again, but then I stopped to forget about him because we're going to different schools, I want to stop liking him. I can't STOP thinking about him. If I'm not in love, I'm infatuated with him. HOW DO YOU GET OVER A GUY? PLEASE HELP!