Girl, you need to cheat on that man...get rid of him..

I would never let my wife be in a threesome that involved other men. Another Woman that would be fine. But in generally, if shes not interested in a threesome at all. I wouldnt push for it.

You ask a lot of questions. Yes I have "let"(i.e.did nothing to prevent) a wife as well as girlfriends from having sex with other men and threesomes. The reason was that I loved or liked them and wanted to continue being with them. I do not expect them to "allow" me to have other women or threesomes. Asker seems to assume that women want 3s with men and men want 3s with women which sounds to me like just a cover for cheating. Married people deciding to have 3s with each other often dicuss whether it should be with a man or woman, why, and who. All too often though it is just one or the other wanting it and the husband or wife just goes along. In my experience MFM 3s work out better simply because most women are multiorgasmic and so flourish with multiple partners. In FMF unless the women are very responsive or the man is very experienced it is fairly common for one (or even both) to get cheated with respect to orgasms. What most of us fear in these situations is alienation of affection. If our wives and girlfriends have sexual relationships with others they will often sooner or later leave us for one of them. This is only natural. So there is a limit. If our beloved mainly focuses on and puts most of her energies into her extramarital activities and less and less into her husband then she hardly becomes an ideal partner and we seek to end the relationship or marriage.