Kingearner says that If a woman allow her husband to have female friends or the husband allow his wife to have male friends it’s like supporting them to cheat soon or later someone is going to because weak it’s just how we were establish to think , I mean I think we all have seen a few movies where we seen people just up and roll with the friend and leave their family smh think smarter people , but on the other hand if they both can handle polygamy in a matter that suits them I’m guessing if all parties care for that lifestyle then it may work in those type of cases