Girl, OMG I know how you feel. I have had to find serious ways of getting the thoughts to stop.
I recently found out that the whole thing with B was over another woman. He finally admitted it after all these months. He says he's in love with her, they are not "together" but he wants to get to know her alot better. They have been intimate, she is married to a soldier who's in Iraq right now..she moved to Seattle, but they talk everyday. He is thinking about moving up there with her, and if he does, that's the last me and my kids will see of him. Whether that's good or bad for us, I don't know.
He still calls, we still get together. The other night it led to sex. He initiated a conversation that was flirtatious in the first place, then when it came to the sex, he was hesitant and I encouraged him just to be spiteful. Things are getting weird. When I invited him to a welcome home party for one of our friends, he said he didn't want to come if he had to see me hanging all over some other guy (he thinks I am in a relationship with one of my friends, but I'm not and I told him so). He is so jealous of this one guy I know that he went into a bar where this guy hangs out just so he could get a good look at him and start a conversation. He was never jealous of me when we were together, but now he is, even when he claims he's in love with this other girl. I don't get it.
But I can't think about it or it will drive me nuts. So I occupy my mind in other ways. But don't drive around, Aeryn, cuz gas ain't cheap!!! Anyway, good luck with this. Keep an eye on him...don't let him get away with anything. Be untameable, girl. Don't fall into the same ruts that lead to the downfall of the first relationship. Y'all are different people now, so do different things. Good luck again, and I'll check in with ya in a day or three!!