I wouldn't necessarily call it "playing the field" unless that's what you are really doing. I want more than one woman, all living with me, not just randomly going out and picking up women with my main chick at home... it would be nice if they are willing to play with each other as well, but let's face it... I have a high sex drive... 1 woman is not enough, and i will eventually cheat. so why not make it multiple from the start, everyone is mutually understanding, and there is no cheating because it's all within the established and accepted partnership... if they decide that I can add someone to the group later on, either because someone leaves or they truly want another to join, that is their decision, and I'd rather they pick and invite the new girl themselves...