There are a few things you can do to accomplish this goal- first and foremost though, you need to bang a new girl(s). DO NOT, however, get a new girlfriend. This only exudes desperation and is a sure fire way to lose the breakup, miserably. Your Ex will think even less of you than when they broke up with you (another tip to win the breakup- initiate the breakup).
And if you do get a new girlfriend quick, make sure that they are at least better looking than your Ex, so your Ex isn't glad to see you stoop to new lows.
Bro 1: Dude she got right into another relationship. And with that guy? Damn, desperado much?
Bro 2 (initiator of breakup): Yeah, what a joke. She says she's winning the breakup. I call yet another victory in this breakup.
Bro 1: Yeah. That's just sad. You've definitely won the breakup.