I'm 29 and my wife is 26....we have been married since 2005. We had discussed the idea of bringing another woman to be a wife for the both of us. But things never came to be...but recently since an unrelated issue I've fallen for another girl. I don't want to leave my current wife...but have discussed with the new girl and she wants to be with me even in a multi family relationship. The problem is that the new girl is not bi and I don't know how to bring it up to my wife knowing she will most likely not get to be sexual with the new girl. Any advise will be greatly appreciated. Thank you in advance.