This is the age old question; wars have been started over just this.
There are few things that happen that cause irreparable damage. Things will never be the same even if you did get together. She may be with someone else, and you would have that on you mind as well.
MOVE ON, MOVE ON, MOVE ON.
It sucks, it is hard, but this is the game. We have all been there, and the first one is the hardest. You never forget your first love. But take heart, every relationship you have after this one, if you use experience to guide you, will be better then the last.
HEY I'M A PILOT
HEY LLOYD, I'm a pilot