Regrets?
Although my wife and I are no longer active in this lifestyle, there was a time when she was giving fucks to several other guys on a somewhat regular basis. Some of them were even my friends.
I never tired of hearing another man say to me "God, your wife's a great piece! I really enjoy fucking her! She is one hot cunt!"
Even better is to hear one of her fuckers tell other men, in my presence, what a great fuck she is. I love the looks on their faces as they come to realize that this other guy really is fucking my wife and that I don't object.
All these thing just make it easier for me to fuck her, myself, and to cum in her pussy, which I cannot do otherwise. The biggest turn-on, ever, for me has been to watch another guy fuck my wife and shoot his cum in her pussy, then get between her legs and fuck her, myself, with my dick-head drowning in his thick, hot cum!
Regrets? None!