I can understand your frustration and depression, but after a while you'll look back on it and realize that she was bullshit and had no right to treat you the way you were treated. I say, we all get really drunk, find her, get her drunk, run the train on her, videotape it, and distribute it online. You'll find someone else. I recently broke up with my gf for 2 years and it was hard but hey, I moved on.