Bashing him with my buds, then listening to "So What" by P!nk on repeat for the following week.
Having friends over to watch chick-flicks and eat junk food. ;)
Letting time pass.
It's hard, but you're not gonna be fully over him/her by just doing something that makes you relax. Might make it be alright for that amount of time you're doing the activity but not later when you've gone back to feeling how you did before.
Talking to friends about it would make me feel better.
exercise, namely with a punching bag (;
Cry and listen to The Beatles. AVOID LOVE SONGS!! :)
Cry, talk to some friends, write, and listen to quality music.