Beach House with Wife, Dad and new Stepmom

I dated my wife through the tail end of high school and all through college. She and my sister were/are friends since early on. It wasn’t unusual for them to sunbathe topless at our pool.

My wife has always had a crush on my father. He was very careful and always avoided the pool when they were out there. There were tall bushes that gave privacy to anyone at the pool. My wife would routinely find a reason to stand up and face the house whenever my father was on the back deck. Making sure he saw her.

When we were in college, my parents got divorced and my father got remarried. My father and his new wife bought a beach house, on a private beach, 3 hours away from home. The private beach was “clothing optional”.

My new “stepmom” was in her late 30’s when the wife and I were in our early 20’s. My father was in his early 40’s. Stepmom was an absolute bombshell. Tall, great legs, very fit, large natural boobs, and strikingly beautiful. Whenever she was at the beach house she seldom wore anything more than bikini bottoms and a thin cover-up top held together with a sash, that was seldom tied.

It was routine for the four of us to go down to the beach, with my father and me naked and the women wearing just bikini bottoms. There would be a couple dozen other people at the beach and all of the men were naked and the women were either naked or just wearing bottoms. It was very stimulating.

My wife is a complete exhibitionist. Her favorite thing to do was take a walk on the beach with my father or stepmom and get introduced to all of their neighbors.

Eventually we’d end up back at the house. Wife and stepmom would immediately get under the outdoor shower, remove their bikini bottoms, and seductively rub against each other while positioning themselves under the warm water.

Wife and I had been up to the beach house several times. Usually, at this point we’re both bursting at the seams and would sneak upstairs to relieve the pressure, while my father and stepmom did the same on the back deck. If I went to the bathroom, I’d come back to the room as she was watching my father, through the window, banging stepmom.

We’d often eat dinner in the screened porch, naked, while guzzling bottles of wine.

Finally, this one night, someone put on some music. We paired off and started dancing. It didn’t take long before the men were rock hard and the women were ready for action. A faster song comes on and without any warning stepmom is grinding on me, pressing her firm tits against my chest, kissing me and grabbing my erection. I wasn’t even paying attention to the wife and my father, until I looked over at my wife on her knees blowing him. Finally getting her chance with her lifelong crush.

Before I could process anything, my wife was bent over a lawn chair getting nailed by my father, and I was lying a foot away, staring up at stepmom’s bouncing tits as she was riding me.

It was bizarre watching my father spin my wife around and cum in her mouth, just as I was unloading into stepmom.

We maintained these pairings for the rest of the night, and eventually retired to separate rooms.

Coming down for breakfast the next morning was a little awkward, but my wife was already looking at her calendar to schedule the next trip to the beach house.