We tried MFM first and I didn't think I would like that, and then our second threesome my girlfriend let me have sex with her friend, which was fun lol, but honestly, I think I was more turned on with MFM. Watching a 9 and a half inch cock nut inside her doggy style- with just his tip - I actually came really fast but I think that was from her being extra wet. It also turned me on watching her try and suck his big dick while I had sex with her.