Swinging Couple

My wife and I are good friends with another married couple. The other couple are in there mid 30’s with 3 kids. My wife had female problems at a young age and can’t have children. We help our friends with there children and have a big part in their activities. We where at their house one night and had the kids in bed so we turned on adult play. We started looking at internet porn and all were getting horny. Our friends wife pulled out her husbands tool and we saw he is porn star big. His wife started bj and kept flagging my wife over to them. I told my wife to go give it a try. I could tell my wife was unusually excited. The wives where both giving him attention. My friend had his hand inside my wife’s shorts frigging her. His wife came over to me and pulled out my cock and sat on me. I was inside her and she was working me aggressively. It wasn’t long we cum together. We then noticed our spouses had gone to their bedroom. We went in there and my wife was riding him. His wife was joining them and my wife said he is trying not to cum. His wife started doing things to him and he unloaded in my wife. Afterwards we had a big laugh about it all. Going home my wife said he was hurting her so she got on top but it was a good hurt. This started us swinging with this couple. He gets my wife with a perfect body. I get his wife whom knows how to have excellent sex. It is almost like cheating but me and his wife meet at lunch once or twice a week for nooner sex. She says she seldom orgasm with her husband but has many with me. She said my wife can get with her husband whenever she wants as long as I keep meeting her. Usually once or twice a month we get our spouses together. My wife needs a couple days of recovery after sex with him. His wife is like a nymph and really loves sex. I’m the only one who has some jealous feelings. My size is average and during sex both wives ride me hard. All is working well with us now.