Yes I have and it turned out badly. We started off being friends with benefits. I ended up having feelings for him because we started doing things outside of the bedroom, like going to dinner, movies, races, riding, etc. So I considered it more like dating and started to develop feelings for him...a natural thing to do right? WRONG, he told me to stop f***ing with my heart. He was still seeing several other women. I got hurt pretty badly. We aren't even friends anymore.