Bumped into my very recent ex today and he was with the woman that I asked several times during the relationship if he was cheating with on me with her.
I don't know if they're together. When we broke up he promised they weren't but that he didn't know what would happen 
It was a mutual breakup (although he instigated it), I should never have gone out with him. We want different things, I work but he doesn't, he fudged some dates about his last breakup when we met, wouldn't deal with anything in his life and would tell me I was a nag for suggesting ways in which he could improve things.
He was lovely. He wasn't for me and it was never going to work financially. I broke up with him and then we got back together but shouldn't have.
But there is a pattern, that I end up with unsuitable men, we break up and they move on quickly. What's wrong with me?