Christy and I had dated in high school and college, but had married other people after college. We had started dating again just recently, and had decided to go on a cruise with our kids. When we first planned the cruise, we had no idea that our children were dating each other.
Although it was not our first plan at all, Christy had moved into my room, and my son John (Jr.) had moved into the cabin with Lisa, Christy's daughter. Christy and I were a little worried about how that might work out, but it had been their idea, and they were both old enough to make decisions for themselves.
The first stop on the cruise was the cruise ship's "private island". When the ship pulled into port that morning, Christy and I watched from our private balcony. I had gone ahead and spent the money on one of the bigger rooms, and one of the benefits was a private balcony.
As the ship neared the port, it was obvious that the island was way too big to be owned by a single cruise line. In fact, we found out later that the part they called their "island" was really just a part of Hispaniola that had been fenced off for the exclusive use of cruise ships.
The island was stunning, with mountains setting the backdrop for white sand beaches. The cruise line had invested a lot of money in the area, and offered a wide range of things to do, from the ordinary horseback riding and hiking to zip lines and roller coasters.
After thinking about it only a few minutes, Christy and I decided to rent one of the beach cabanas, and decide from there whether we wanted to try what they claimed was the world's longest zip line.
We met the kids at breakfast to make sure they were still getting along, and to judge whether letting them room together was a wise choice. When we found them, they were already prepared for a day at the beach. John was wearing a Tesla t-shirt (the scientist, not the car), and board shorts, while Lisa wore a white lace beach wrap over a bikini top and running shorts.
They made a cute couple, but mostly because of Lisa, who was amazingly hot. When I had first met Christy's daughter, she had struck me more as the girl-next-door type. She had blonde hair, an easy smile, and an athletic build. She was almost as tall as my son, which means she was several inches taller than Christy. Her breasts were tanned and perfectly shaped, and Christy almost caught me staring at Lisa's skin.
"We already reserved a cabana on the beach, do you guys want to join us?" Christy made the offer, but it was clear to everyone that we really didn't want company.
Lisa smiled, as if she knew exactly what we had in mind. Her smile was dazzling, and I noticed that John was entranced. "Nah, I think we are going to try the zip line. We will give you guys some time alone, and maybe we can meet for lunch."
There was a BBQ planned on the beach, so that all the cruise ship passengers could eat themselves into a stupor without having to walk back to the ship. Our phones didn't work on the island, so we made plans where to meet, and headed off our separate ways.
When we got to the beach, the cabanas were even better than we expected. They were two-story wooden lofts, with deck chairs in the shade on the first floor, and a small bed and lounge chairs upstairs. The cabana was designed to be open-air, and the lounge chairs were designed for tanning, while the bed was in the shade.
The railing was a perfect height for nude sunbathing. You could see the beach just by raising your head, but the people on the beach could not see you unless you wanted them to. Their view was blocked by the wicker designs woven into the railing.
There were showers outdoors between the cabanas, so after a quick swim in the ocean, we showered off and headed upstairs. Christy removed her bikini and laid it on the table to dry, and stretched out completely nude on the Adirondack chair to get some sun.
I stood by the railing and looked out at the people on the beach, and once I was sure they couldn't see us, I took my suit off as well, and turned my attention to Christy.
Christy was about 5'5", or about 165cm, and I was a little over 6 feet (maybe 185 cm or so). I had been working out to get in shape for the cruise, but Christy had clearly been working out a long time. Her body was thin and firm, and her features were just as striking as when we had dated in college.
Christy had applied sunscreen earlier, but now she was re-applying to the areas that had been covered by the bikini.
"Here, let me help you with that." I said.
First, I rubbed lotion on her breasts, making an extra effort to massage the nipples until they became erect and hard. Her breasts were maybe a B or a small C, but they matched well with her tiny body. The small size of her breasts had one other advantage: Even though she was the same age as me, her breasts still had the shape and firmness of a much younger woman. In fact, she must have been careful with sunscreen all her life, because her skin looked much younger than mine.
As I finished with her breasts, I turned my attention to the tiny area that had been covered by her bikini. First I rubbed sunscreen into the tan lines on her hips and then gradually started rubbing closer and closer to her vagina.
Her mons area had fairly close cropped hair, but the rest of her vagina was completely shaved. Once I had rubbed the sunscreen in appropriately, I switched hands and started rubbing the outer lips of her pussy, and occasionally using my finger inside her.