First things first, Grow some f-ing balls man. given she was your first girlfriend but still, your 20 yrs old, probably still in school am i correct? so get off your ass, have an eggo, go to a party or something, get stupid drunk and hit on every piece of decent ass there. you might even get laid, who knows. all i know is after a little time it'll make you feel better to be back out there. and as far as the whore goes f-u-c-k her, i also went through the same thing you did actually almost exactly the same thing, it's frightening. but all i did was go out with my friends, hit on some girls at parties got some good responses which gave the confidence a boost and eventually came to the realization that it was that dumb bitches loss. then about a year later i saw her at a party and she wouldn't leave me the hell alone because the guy she cheated on me with was cheating on her and was constantly verbally abusive to her. i kind of fealt sorry for her, but thought to myself it's her own fault. So in a nut shell get up and stop feeling sorry for yourself and get back out there, and don't worry about the girl karma will take care of her. she'll probably end up pregnant and homeless. ha ha ha.
crack whores are cool