I am only going by what my husband told me. With the exception of his first exwife he has never had less than 2/3 women in the bed on a regular basis... that is until me.
I am going with how Stiletto phrased it (from the women's perspective, that is).
I honestly don't understand what the big excitement is about inviting other parties into your bed. If your woman is willing to share you with another woman, then what is the big deal about you sharing her with another man? Interestingly enough with any sort of more committed relationship my Old Grump had eventually ALL of the women "cheated".... with A DUDE. He didn't look at it as cheating with other women... go figure.
The whole thing is silly if you ask me.
If this works for another couple then I say more power to them. Just statin that I was there and didn't really *get it* and also that I realized that it just was not for me. Was fun for THAT moment but not something that I would care to get into now and I am tellin ya'll that since I have been with the Old Grump MAD PUSSY wants to come home.... WITH ME.