I’ve been taking my young kid to swim classes the past several months. Another couple usually books the same time slots as us on the same days of the week. The guy never really vibed with me - he was super basic, unfriendly, and always sort of standoffish. One parent goes in the water with the kid and the other waits outside the pool behind a literal wall of glass, which helps regulate the temperature inside the pool area.

The wife was way more attractive than her husband. I would come to find out that they got together when they were really young and stayed together since they had a kid. I wasn’t trying to get into anything with the wife (let’s call her A), but sometimes things just happen.

I usually go into the water with my kid for the lesson while my wife hangs out behind the glass. “A” was usually the one to go into the water for the lesson. In our kid’s age group, the lessons are usually given in groups of two, which means me and A were in the water together with our kids interacting. The instructor would be there maybe half the time and would go around the pool with the other age groups, tending to everyone.

A and I instantly had a connection. We’d be laughing a lot of the time and felt like we’d known each other for years. Nothing was ever inappropriate at first, but our chemistry led to some discreet flirting within the first month.

A had a pretty face and gorgeous smile, but her body was unbelievable. She was petite, stacked, and toned.

Around the third week of lessons, we had just settled in to the pool when I made a comment about A’s shirt not doing much to hide anything. She always wore a t shirt over her swimsuit (an attempt to be modest in a family setting, most of the parents do it), but that day she wore a white shirt and you could clearly see that her tits were spilling out of the side of her bikini top and her nipples were rock hard. I laughed as I said it, and she asked me if I liked it. I didn’t know how to respond since we hadn’t really flirted much, but I managed to say “I love it”. A then told me that her husband didn’t want her to wear it and she could tell he was getting jealous of me. Our instructor came by, went over the day’s lesson, and soon left to make their rounds. Once alone, A started telling me that they actually got into a fight because her hubby said she has too much fun and laughs the whole time she’s with me in the pool. I realized he was probably watching us now and I turned around to spot him staring at me from behind the glass. I asked A what his deal was and she said “he probably thinks you want fuck me or something”. Again, I was surprised because she didn’t usually talk like this, but the mere mention of the topic got my heart racing. “Did I do something to give him that idea?” I asked her. She said “no he’s just always jealous and I’m getting so tired of it. I’ve never cheated on him. I’ve never ever been with anyone else, but he swears like he can’t trust me”.

“Does he think you wouldn’t be able to control yourself if we were alone together or something?” I asked and she said “he might be right”. We laughed, but she made some serious eye contact with me and definitely gave me a hint that something might be possible.

The rest of the class wrapped up as usual, but on our way out of the pool A asked me what I wanted her to wear next time. I said “no t shirt” and she said “see you next week”. She hurried to get in front of me to the stairs out of the pool and walked slowly up the steps, her ass a few feet in front of my face - I couldn’t stop staring. Her oversized shirt usually hung down covering her, but she had pulled it tight around her stomach to wring it out.

The next week my heart sank as A hadn’t shown up to the class, but she was just late. Right before A brought her kid into the water, she popped off her t shirt, revealing the same bikini top she was wearing the previous week, her tits, again, spilling out of the sides. The first thing A said was “is this what you wanted?”. Being thankful for the glass keeping our spouses in the dark, I said “yeah, but now I want more”. A laughed and said she had to hide her other swimsuit because her husband tried telling her this one was too revealing. Throughout the class we flirted a bit here and there, but didn’t have much time alone, so nothing else really developed. When it came time to leave, she mentioned that she would be coming to the next class without her husband and she couldn’t wait. It took me a few days to think of something to occupy my wife, but eventually I booked her for a massage and nail appointment while I took the kid to swim class.

This time it was just me and A at the class and things were different. A was a bit late again, but before even getting into the pool she asked where my wife was. I told her she wasn’t coming today and A asked for my phone number, punching it into her phone and asking if we should come up with a code. It’s like she knew something was going to go down between us and she had no doubt that I was entirely on board. Our code was to text a specific question. One response meant can’t talk, another response meant the coast is clear.

Without our partners watching over us, we were free to interact a lot more. A would touch my body as she glided past me in the water, and soon I was grabbing her ass and groping her tits below the surface. When A finally put her hand on my crotch, slowly wrapping her fingers around my shaft and greedily squeezing it, she muttered “damn babe” and looked me in the eye.

Later that night A texted me our secret question and I responded that the coast was clear. Wifey was asleep in bed and I was alone. She asked if I could meet up and I agreed to meet her in a parking lot.

I could tell she was nervous, but she wasn’t shy. We made small talk and eventually came to talking about her relationship. She said she’s never been with anyone else, and that she had been fantasizing about it all the time lately. She told me she never gave her husband head, but she wanted to go down on me badly. I told her she could. She started rubbing her hand over my dick through my pants. I told her to unbutton my pants and she did. She paused and I told her to unzip them and take it out - she did so and reached into my underwear and pulled out my hard cock. She said “damn” and gave it a few strokes. She told me how much thicker it was that her husbands and eagerly started to lick it up and down. She took it into her mouth and gagged on it while I unclipped her bra and played with her nipples. She moaned and sucked faster. I worked my hand into her panties and she was soaking wet. After a few minutes she told me she wanted to ride me. I got into the back seat and she got on top of me. I pulled her hair and choked her while she fucked me. She came within a few minutes and was a quivering mess. She told me she’s never had an orgasm from penetration alone. She just sat on top of me for a few minutes catching her breath. Eventually, I started moving her hips up and down, back and forth, slowly picking up speed until I was close. I told her I was going to cum, she said “do it” and fucked me harder. I finished inside of her and she kept it in for a few minutes as we made out. We fucked again that night and she came even faster the second time. I came in her again and she put her panties on, letting my cum ooze into them.

We’ve been fucking now since early summer. We have a regular schedule where we meet up twice a week. She’s gotten kinkier, loves anal, and talks about adding a girl to the mix one day. She told me she doesn’t let her husband fuck her anymore. She’s a dream come true and I’m savoring what we have while it’s good. Our partners don’t seem to suspect a thing and swim class is going strong.