So me and My friend are both married and we share a house (bills and rent become much cheaper). We have been best friends for 6 years now and our wives don't really know each other. My wife is a little larger with big and round b****, but his wife is much cutter and has the better ass. We both want to convince our wives to try a foursome between each other. It isn't going to be super hard, but they don't just want s**. What is a smart way we can convince them for this amazing foursome?