If i find myself in this type of situation, I usually separate myself from it until i have regained my bearings. It's hard to focus and get a hold on your emotions when your 'twisted'.
This girl is bringing up other guys just to get you jealous and insecure. Think of it as as an attempt to get a reaction out of you, like a child who doesn't get what she wants. It is pretty childish if you think about it. You hurt her before, so now she is trying to get you back for what happened...immature/childish games. Now you know why some GURUS tell you to treat girls like little brats.
Anyway, you should look at it as a compliment. If she didn't care, she wouldn't bring up these other guys to make you jealous. And if she cares, you can toy with her emotions.
You need to get a handle on this if you wish to get back into the drivers seat.
The next time she says something about an ex, you can disconnect from the conversation, bring up a girl from YOUR past and compare it to her story, or call her a$$ out. "Listen, I enjoy the stories of you and your little boyfriends, but I'm growing bored, lets move on."
Or, my favorite...change the conversation about an ex into something sexual and ask very explicit questions. If she gets defensive or says something like 'why are you asking me that'. Your response can be, 'oh, I thought you wanted to talk about him (them), since you're always bringing it up'. I know, this is a bit childish, but who cares...it's my way of toying with her.
