Actually, it did cross my mind to ask if it mattered what sex the individuals are in the twosome, threesome, or foursome. Here's another thing: age would make a difference in the strength of bonds, and alliances between the partners, too. Younger women tend to be more competitive with each other where as mature women are not. I think three mature women would have a stronger bond with each other than they would individually with their shared male partner. That's what I was trying to say earlier.