I've told you the story about how my husband Jeb and I (I'm Marcy) got intimately involved with our friends Tanya and David. We get together with them just about every weekend and swap. We spend the night just fucking, without worrying about anything else. It's exciting being with a different lover. David does things that are different from what my husband does to me. He's considerate. He likes to eat me. He smells different and has a different body. His tongue and his cock feel different inside me. I wouldn't want to live with him, but I sure like to let him fuck me. I'm usually worn out and blissful on Sunday morning. Jeb and Tanya feel the same way. Tanya and I have different sized tits, out cunts taste different and we react differently to having a cock inside us.
We have been swapping on Saturday night for a few years. We only do things together, no sneaking around during the week (well, usually). We had to be careful to not get pregnant by the wrong guy and we are having to be careful as our kids grow older. We don't want to have to answer questions like why Daddy and Aunt Tanya are in the shower together.
I have an older sister, Letitia, we call her Letty. We're only two years apart in age. She lives quite a distance away and only visits a few times a year. She got divorced from her asshole of a husband and hasn't had much luck with men since. We've always been close; we confided in each other as we dated through high school and pretty much knew what the other was doing. She told me when she lost her cherry to a guy she dated for a while and I told her about getting felt up by boys and when I gave a blow job to my boyfriend.
Recently, we had gotten drunk one night when I was visiting her and I told her about the liaisons we were having with Tanya and David. She thought it was amazing but said she was jealous. I was getting fucked by two guys while she wasn't getting any at all.
About six months later, Letty came to visit and was staying at our house. We'd normally take a week off from swapping with Tanya and David when someone visited. We weren't planning to swap. It was near Christmas and we went to their house just for dinner, with Letty along. They knew her from previous visits. Letty was having a tough month. Her kids were wearing her out and she was hassled at work. She jabbered about that for a while and was getting pretty drunk. All of us were, and we were having a good time.
Without thinking, my husband Jeb and my friend Tanya started necking a bit. It was titillating to watch them. He played with her tits and put his hand down the back of her pants. David began to take some liberties with me. We were relaxed around Letty, and weren't inhibited by her presence.
Things started to get interesting when she innocently said to me and Tanya, "It's amazing what you guys have. You have two guys fucking you while I don't even have one. I wish I could find something like that."
Tanya commented, "You just need to find the right guy."
She said, "I'm not having much luck. I'm getting older and have two kids as baggage. I don't know why any man would want me."
David said, "Hell Letty, you're hot. If I weren't married, I'd come after you."
Jeb spoke up, "You've got a nice body, a lot like your sister Marcy's, and I love Marcy's body."