Gentlemen of the forum, here's the juice.
Lately I've dated this HB9 for a short while but after our last date I just froze her out completely cause she was unresponsive during our dates. I said screw it and just gave up with her.
Last week she invited me to a gig but I had to flake her at the last minute cause another HB had promised me a better time (t'was good

). Apparently word got out fast and I think a friend of mine told her why I didn't attend the event.
Fast-forward to yesterday when I met this HB9 again at a casual party. Two things happened there:
1) She indirectly told me to ask her out again. At this point I was really considering it cause she was "back" to her "oh damn I wanna bang you real bad" self.
2) I overheard her say that after last week gig she met with her ex and got off with him. There is also the probability that they'll get back together.
Surprisingly the latter stung a lot, especially after I had decided to get back with her. This is where I ask for your help, my dear learned men:
(1) Is this chick trying to pull a fast one on me?
(2) Am I over-analysing it here or did she go back to her ex cause I went with another girl. I wouldn't blame her there.
Thanks! Just need some clarification to decide what to do next.