Has your best friend ever dated your recent ex girlfriend?
One other thing I like to mention. After my girlfriend broke up with and a year passed we had become pretty good friends, almost went back out. I remember when my friend (who is now dating my ex), heard about me and her considering dating again. He was furious when he heard about it. He actually told one day while we were playing Halo Reach on xbox360 that my ex was pissing him off because she would bother me. She wasn't annoying me, instead trying to draw my attention away from my senses. He didn't want me to date her again. I took his thought into consideration and followed it. We ended up not dating each other for a second time. I sometimes wonder if he had feelings for her back then.