One of the most memorable was actually right after I dumped this girl for being a total psycho. She had a great little body and was an animal in bed normally but I guess when I told her we shouldn't see each other anymore something just snapped. She basically attacked me, tore my clothes off and we had the most amazing sex ever. And then again. And then again all in the space of about 2 hours. It was like primal animal straight out fucking with spanking and scratching and biting and all that stuff. No holds barred.
I think she thought it would make me want to take her back but except for having sex with her I really wanted nothing else from her. We continued as fuck buddies for quite some time after that though.