First thing you need to stop doing is spending time with your ex, thats just not helping you feel better about yourself. You need to get out with your guy friends for a few weeks and live up the town. Burn up the streets downtown, stop off at some trendy places and just look as booty.
Once your feelling better about yourself you'll soon realize that most of the girls at school at whores and you'll want nothing to do with them. The girls at my school are nothing special, there are a few that could be normal but i've just about given up on school girls; maybe you should do the same.
The next thing you should do is hit the gym a bit more, i mean a real gym and work out hard. This is only going to give you an outlet for your pain.
The easiest way to find girls who can be friends is to meet them through other friends, that means you might need to get new friends. Something to remember girls who act like they are above you have issues, no respectable person pulls that kind of shit on someone is just rude. My neighbours is a model and I'd say shes HOT, but she doesn't act like it, these are the type of people you want to meet. Girls who aren't stuck up, if they are tell them to go F*UCK themselves and bail.
mt.bikers 2cents
Or try this, start using your ex
you know what i mean. I wouldn't recommend it because you might feel like shit afterwards. Dunno what kinda person you are, i would go with what i stated above