When my current and I were broken up, we humped like rabbits for a while. I told myself I wasn't going to do it but I let my sex drive get the best of me. It was always so freaking good because I was already comfortable with him because of our past. I don't think I'd ever have a one night stand to satisfy my animalistic ways so it was a good way to get some sexual healing. So, absolutely, yes!
This only happened to me once and it ultimately was a bad idea. We broke up like a month prior and I thought she was coming over just to talk and hang out. Sex was the furthest thing from my mind but for some strange reason hanging out lead to making out and that lead to sex. I guess since we were together for awhile and had plenty of sex together it just felt natural but about an hour or two later I knew I had made a mistake.
We hung out a second time after that and we started to make out again and I had to stop. I told her it wasn't the best of ideas because I wasn't looking to get back into a relationship right then. She got super pissed off and accused me of just using her and that wasn't the case. It took quite a long time for us to get friendly again. I mean there were other circumstances unrelated to this topic but this didn't help us be buddies at all.