Me and my wife were over at my sisters house parting with her and her husband. My sister went into the bedroom and her husband went in and then came back out and asked me and my wife if we wanted to trade partners. I looked at my wife and she said I know you would like that and she looked at him and said I would love to have you inside me. He said to me just go on in the bedroom and be with your sister. I got up and he sat right down next to my wife and they started kissing right away. I opened the bedroom door and I think I really surprised my sister coming in the bedroom. She looked at me and said I’m so glad your here. She was naked and came over and we started kissing. She helped me with all my clothes off. She looked at me and said I want you inside me so bad. We started f****** and then it turn into love making. I came inside her 5 times that night. We still trade every other week.