MFM - have done it, would gladly do it again, depending on the participants.

FMF - have done it and enjoyed it, but in the future it would depend on who the participants were. Another couple w/me as the extra F would be fine; however, if the M was someone I really loved, he wouldn't be getting near another F...sorry. I'd rather forego ever being w/another male than to see him w/another female. He'd have to just watch if he expected to be present.

FFF - haven't done it yet, certainly would do it, but I don't ever expect to be in that situation in the future.

MMM - would love to watch; I'm as turned on by seeing 2 Ms together as any other combination.

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Communication is the key.