The best way to get over someone is to....get under someone.
Well, if you tell yourself not to think about him your going to. So just go have fun with a friend or friends and have fun or do something that will take all of your time so you can't think
I usually listen to some music, and hangout with friends
Have an imaginary date with him like walking out a romance novel in your mind. People do it all the time with the stars they idolize.