Some of the drink/screw your problems away methods might work with a little break-up, but this sounds like a bit more serious. I would avoid that path in your situation to avoid going down a path of self-destructive behavior, unless you think you can have a few fun nights to forget the pain but keep your head on straight. My advice would be to keep your head up and find a positive outlet, school, work, working out, volunteering, etc., to keep yourself busy. Trust me, staying busy will help because there's nothing worse than being alone with your own thoughts while going through this.
Having gone through a similar situation, I would give her space and you never know, she might realize the mistake she's made. Regardless of what happens, this is the worst it will feel. You'll feel a little better each day when you realize life does in fact go on.
Having gone through a similar situation, I would give her space and you never know, she might realize the mistake she's made. Regardless of what happens, this is the worst it will feel. You'll feel a little better each day when you realize life does in fact go on.