I dont get why i still like him, i barely even know him!?

ok BREATHE!!! relax. its not the end of the world. Seriously, time is pretty much the only real medicine. I know its sucks big time but its the only thing that will cure ...this. lol distract yourself a bit, flirt with other guys, take some of that stress off your shoulders. you don't need it, your young and enjoy your time. (wow i feel like my mother and im still in high school.) Maybe you don't need to forget him, just don't focus your life around him? i'm not sure if thats your case but really just let go a little and try not to pay attention to him.