At one point we were interested in bringing another lady into the bedroom, but that point has passed and I no longer have interest.
He would still like to, but it's not something he's angry not to get so we've put that aside for the time being.
He has no interest in bringing another man into the bedroom, and I really don't either.
The sex we have is more than good enough to satisfy my needs, and even though we both still have a couple things we'd enjoy doing the fact that the other isn't as into it makes it a "better off in fantasy land" situation. I don't want to watch him fuck another woman, he doesn't want me to peg him... We're both ok with where we stand and we've talked extensively about it over the years.