After about two hours of swimming, everyone else drifted back into the house. First her parents followed in about half an hour by her brother and sister. We were alone in the pool in the dark. My father-in-law was a frugal man and had the pool lights and yard lights on timers that clicked off not long after the younger ones went in. This left only the light shining out through the house windows to light our swim.
I was feeling frisky and swam over to my young wife, admiring what I could see of her figure through the water and in the darkness. She is short in stature, about 5-foot-3, and in those days she was only a couple of pounds overweight. But the extra weight was in all the right places. She was wearing her red, flowery bikini over her well-shaped C-cup breasts and cute, round bottom. She thinks her behind is too big, but I think it's the cutest one that I've ever seen.
I brushed up against her back and lightly kissed the back of her neck before swimming away. Normally she was rather timid about showing affection, especially in situations where we might be seen. So I was somewhat surprised when she didn't pull away or complain. I swam back and brushed against her again, pausing to nibble at her earlobe. She twisted around and kissed me back before slipping away, this time she was the one to swim off. We began a teasing game, each brushing various parts against each other, along with a kiss or nibble, before swimming away to start the cycle again.
After several rounds of brushing arm against back, or leg against tummy, I caught her against me and didn't swim away. I was ready for more and I'm certain that she could feel my hardness through our swimsuits. Our mouths met and our tongues intertwined, probing towards each other. I slid my hand down her back and into her bikini bottoms, cupping one of her round cheeks. She pressed harder against me, one hand in my hair, the other rubbing against the top of my ass crack. I didn't bother with her breasts just now. I knew her bikini top was too substantial to get a good feel of her nipples, and it was too tight to get my hand into.
We moved over to the edge of the pool and wedged ourselves against the side to keep from sinking. I don't know how long we were at it, but no one came out of the house to check on us. Finally I couldn't stand it any longer. I pulled my mouth away from hers and whispered about my need for her. At first, she was reluctant to go any farther with her parents so close. I moved my hand from her bottom around to the front of her bikini and massaged her inner lips. That had the desired effect. She soon wanted me, too and showed it by reaching into my swimsuit. I pulled off her bottoms and my own swimsuit as quickly as I could. Without any cloth between us, we were free to satisfy our needs. I rubbed her clit until she was very ready, but it was impossible to tell how wet she was with all that water around. I would have loved to lick her clit, but I knew I wouldn't be able to hold my breath for long enough.
After a moment or two, she spread her legs, guiding me inside her. The feel of the warm water gave a different sensation to our lovemaking, an extra pressure or suction or something. I can't really describe it. The resistance of the water also slowed down my thrusts, so I moved my hips ever so slowly. I could tell by the look on her face that she was enjoying these new sensations, too.
Suddenly a light came on in one of the windows facing the yard. I stopped moving, keeping myself deep inside her and we both held our breaths in case her parents happened to look out the window. Nothing happened and I started moving again, even quieter than before. I was trying to get even deeper, but unable to because of the lack of any solid footing in the pool. It was as if we were weightless. She must have wanted me deeper, too. She wrapped her legs around my hips and pulled me in. What a wonderful feeling. With a moan, I kissed her again, our tongues caressing each other just as she came. I felt her body stiffen and she squeezed her legs even tighter, pulling me just a fraction of an inch deeper. That was enough to get me off and I found the sensation of cumming into a water-filled pussy very enjoyable.
When our orgasms subsided, we stayed motionless in the pool for a while, still connected and floating weightless in the dark. Both of us reluctant to end our nighttime swim.