You need to find a dating site that promotes the kinds of relationship you are looking for. I have often thought I would like for my husband to have other wives just to take the pressure off of me to be his everything.(when we were first married) I think I could share a man, I think I could raise another woman's child, I can think of a lot of advantages to this way of living. It is not unheard of, it is just not the social norm. That is the only advice I have to offer. I do know now that this is not the kind of relationship that would work for me though. Find a dating site that promotes this way of living.

A friend of mine is married to a bi woman. She shares her hubby. She has a girlfriend who lives not to far away and they all share meals, responsibilities of the children and everything. He doesn't mind. He likes to have sex with his wife and be a participant in the sex his wife and her friend have. On occasion he has sex with her friend as well. It seems to work great for them. Would something like this work for you or is this not what you are thinking.