Would love to try all of the above. Haven't met the people to do it with sadly. But it is something that I want to try.
I would have accept the invite and see where things go. As a third having the wife watch as her husband sucked me was a lot more erotic than I ever thought.
For me it would be erotic to have the wifes pussy engulf my cock while her husband watched or she sucked him off.
Our last threesome was just the opposite. Our friend had his cock buried balls deep in my wife's pussy, while she vigorously sucked me! Watch his cock plunge into her while she Hoover'd me was AMAZING!
After the Hotels in Cayo Largo Cuba,(nude beach) there is a secluded section east of the hotels on the beach where you can get in on the swinger action. I got involved with some swinger couples. Did Doggy Style with another guys wife/girlfriend while he video taped us. My cock is 7.25" and 5.2' girth and I filled her up good. I pulled out and shot my load over her head with a few shots landing on her back. He said he was going to post it on a porn site, but I never could find it !
FFM Where the women have sex with the man and each other Watching the two women together, or having each of them watch me with the other in turn. Or penetrating one of the women while she kisses and licks the other, or one of them sucking me as the other pleasures her. I think the nicest for me might be having them both sucking me alternately, in rapid succession, one suck each at a time, to see who could make me cum....