My name is John and I have a twin sister Jean. We have always been close and share everything, and I do mean everything. Our whole family has been very close so it wasn't unusual when Mom and Dad said they wanted us to go with them to an old camp sight that we used as kids. Even though we are both married now they said they wanted to share something with just the two of us and our spouses could join us latter. We found out what their secret was and decided this would be a good time to tell them ours.
We got to the sight and set up camp. We had a nice dinner and were sitting around the fire, Mom on one side and Dad on the other. Jean and I sat together. We could see that Dad was having trouble getting to the point but finally he said, "Your mother and I have something we want to share with you. We want you to hear it from us before you find out some other way." He stood up and started walking around then looking at Mom he said, "Your mother and I went to a swing club the other night and we liked it and may consider going back. There I said it."
Jean and I looked at each other and Jean started, "We've known about that since the day after you guys went. A friend of ours is a member and told us about it. He said he was real tempted to get it on with Mom but since he is our friend he decided not to."
Dad couldn't believe what he was hearing, "Why did you let us go on like this if you already knew?"
Now it was my turn to speak, "We thought it would be a good time to let you know our secret."
Dad looked at mom and asked, "What secret do you have?"
I looked at Jean and said, "Jean and I have been sexually active with each other for some time now."
Dad yelled, "You've what!?"
Jean started to speak, "Remember the camping trip the weekend after we turned 18?" Jean kisses my lips and I continued.
I said, "You said we were old enough to watch out for ourselves." I kiss Jean and as she talks I stroke her tits.
Jean says, " We knew you and Mom were just looking for some time to go into the woods and fuck." We kiss again as I start talking as Jean strokes my cock.
I turned away when I said, " We wanted to watch and followed you. We saw you doing things to Mom. We got so hot watching you two that we ran back to the camp sight" I push Jean's skirt up and stroke her thigh.
Jean was breathing hard now and said, "So with all that time to ourselves we found things to do." Jean unzips my shorts and reaches in for my cock.
Now I was the one having trouble breathing and said, "We both experienced our first blowjob right about where you're standing Dad. It was the first time Jean ever went down on anyone and the first person to ever go down on me. Latter I returned the favor down by the lake when I ate my first pussy, and guess who's it was?" Jean takes my cock out and is stroking my cock and I pull her panties off as she talks.
Jean opens her legs a little and goes on, " On our 18th birthday our gift to each other was our virginity."
I was stroking Jeans leg now when I said, " That was the first time either of us had fucked anyone."
Jean pulls my hand up to her pussy and says, "And we are still doing it every chance we get."
Mom seemed beside herself and asked, "But you are both married, what about your mates?"
I stand up and say, "They would not be our mates if they did not accept it." I start to unbutton Jean's top and she is not wearing bra.
Jean pushes her tits out more and says, "Before Jim and I got married John came over and Jim not only watched me fuck my brother but shared me. He took seconds on my pussy while I sucked off John." Jean's top is completely open and I reach down to play with her pussy as she opens her legs more.
I slip a finger into Jeanβs's pussy and say, "Then the next year when I married Sandy, Jean came over and not only did Sandy watch me fuck my sister but found out that they both like pussy as much as I do. They are still doing each other."
Jean was getting wobbly now and said, "We let them both know what was going on before we married them and they understood that it was not going to stop but they were more than welcome to join in."
Dad is totally dumbfounded now and asked, "So the four of you"
I say boldly, "Only about once a month. Other wise it is just who ever is there. Sometimes it is just Jean and I and sometimes Jim will join and sometimes Sandy. If I'm at Jean's and she and I want to be alone, Jim will go to my house and fuck Sandy. In fact they are probably doing it right now."
Dad sits down now and asked, "So why are you telling us this now?"
I get up with my cock still out and walk over to Mom and sit next to her. I say, "Now that we know you have opened your relationship and don't mind fucking other people we were hoping that maybe our fantasy could be fulfilled." I'm looking at Mom and stroking her arm and just the outside of her tit.
Jean walks over and sits her naked ass on Dad's lap and says, "We want to have sex with the two of you."
Dad goes to jump up but is held down by Jean and yells, "You want to what?"