ask ur gf to talk with u and then solve the matter

don't know, sounds like you guys had a pretty good relationship once, and you will again. don't beat yourself up too much about it, she may come around. I mean there are bound to be disagreements ahead, and you want to be able to work through them. If you are sincere, and truly sorry thats what matters; give her time. orrrrr you could go out with the girl you were flirting with, just kidding!

Hmm .. I believe she loves u more than u love her. Even though u did something really bad ... shez still givin u a chance to proove urself.
Jus the way u can not leave w/o her ... she can't either.

So, in the mean while ... do everythin and nything to please her ... like sending gifts, flowers, etc ... write email, letters (paper) appoligising and stating how much u love her ... and try not call her if shez not answering. May be you can leave a voice mail (only) once a day.

Just hangin there ... And she will forgive you. And remember ... Never repeat this kind of mistakes ... it will really really hurt her. And if u truly love her, you wouldn't want that to happen ... rite?

Good Luck,

Aryan