Oh yes, I have that thought often!
There was guy that I dated on and off 14 mnths. I think we were broke up more than we were together.
We couldn't stand being together, but couldn't stand being apart. I finally broke it off with him, he's been with his new gf (who is a total loser, like him), and he still IMs and txts trying to get in my pants. I really don't know what I was thinking, he wasn't even that cute!