There is a married couple down the road from me and the guys wife's lesbian lover lives with them. I've went to dinner with them in a group, rode out on the boats with them, etc. There just seems to be some kind of mutual understanding between the husband and the lesbian. Or in other words, I dont think they fuck each other or even entertain the thought of a threesome. All three of them have their own separate rooms in the house, but theyre all king size beds. Maybe theyre splitting the bills, who knows.
Basically, just a suggestion that if you're going to date someones wife - the husband may not be completely out on the idea. Out of all the Lesbian Couples Ive seen, they've all broke up over time. That thr-uple I just talked about has been together since at least 2014. Literally the very essence of happy wife, happy life.