I think our first threesome will have to be MFM. I don't know how comfortable I am with him and another woman. At least at first. The progression would probably be MFM, couple swap, and then FMF. Although, hubby doesn't really have much of an interest in FMF.
I have down FFF and FMF and have to say the FFF went over better because the FMF situation was with an old friend which made things really complicated and short lived. But... in the future... having another FMF with my lover and a complete female stranger would be awesome!
Here's an update on our latest 3some. It was an MFM with a twist. She was still the center of attention. At one point I was in her and he started to fuck me at the same time and vice versa. That was truly one for the books. So there went my virginity.
I would pick FMF specifically if the other F would focus on giving him oral as well for the ending. My guy has developed a huge blowjob fetish, so I think that would give him the most excitement. Otherwise I think another girl would be included just for me to experiment...
I like the idea of having a MFM threesome, but will probably never have one. Most guys I have dated don't want to share or would want a FMF in return, and I'm not big on sharing either. I also am not really into casual sex, so that's not an option either.