I know how you feel bro. You seem like a really good brolly and that is why I gave the advice that I did (earlier in this thread). Guys like you and me assume the best in people and in the end we get jerked around by confused females. I have seen the error my my ways and I have never been happier.
She pulled the old 2-minute trick on you. You are almost out of the game with this girl. You should only call her back if you REALLY feel that she is unique. Even then, wait 5 days. She now ses you as the back-up cock and that is a bad place for a guy with self-esteem.
Otherwise, cut your losses and chalk this one up to a hard life lesson.