Well honestly man it's quite simple. You were what she wanted and you made it to easy for her. Females want a guy who's going to challenge them. Not fold to there will. Which sounds like what happened in your case. Here is what I would suggest. Basically I'd suggest just getting over her. As stated above... Go out and have a blast. You don't need to put on a show for her, as it may come off as fake. Which you REALLY don't want. Just go out and do your thing regardless of if she is there, watching you or even cares. Girls want a guy who is challenging, period.
If she does take a run at you again, blow her off. You have better things to do then sit around waiting for her to show interest. Make her EARN the right to hang out with you again. She fucked up the first time but so did you. Don't let either happen again.
