There will always be more girls, maybe u should move on. When my g/f broke up with me a few years ago, i still liked her but i eventually realized that street was a dead end, so i moved on. If u really still like her though, maybe u should just confront her and tell her u still have feelings for her. The worst thing that happens is she doesnt care for u the same way u care for her.
anyway good luck dude.
tip: it might be easier to confront her in person as oppsoed to online