I'm not emotionally suited to non-monogamy. Casual sex isn't my thing and I don't have the energy or the time to maintain relationships with more than one person at a time so it would never work. My sister has a very wonderful relationship with two people. They all live and sleep together. They're a committed threesome, no straying outside the "bubble" as they call it. Sometimes I'm jealous of what she has, since she's been with her boyfriend for about 8 years now and, though her girlfriend is a fairly recent addition, about a year, they've just got such a good relationship, all 3 of them, and I haven't found even one person that I'm as good with as she is with both of hers. With the right people, I could probably make something like that work, but I'm not sure I'd ever find those people and I'm not really looking. I'll just be thrilled if I can find one person.