33(M) Married and fucked a girl (19f) who flirted with me at the gym

My wife and I got a gym membership together a few weeks ago, I've always been into weight lifting and staying fit. The gym that we go to is 24/7 so it fits our needs well, and the first time we went I noticed this cute girl doing an ab workout on the floor in the weight area but didn't think anything of it at first and went about my business.

While my wife was doing cardio, I started my arm routine and the same girl who saw me came up to me and motioned me to take my headphones off. I was honestly slightly annoyed at first as I just started. She said she loved my arm sleeve (tattoo) and we talked about tattoos for a while and it gradually turned into active flirting. She knew I was married, but seemed not to care and I didn't see any harm in flirting. I could tell she was getting flustered talking to me and it was really cute.

Things started to escalate as I started going by myself at the usual time, and she would always come up to me when I was there. If I was doing back, she would come over to me while I was doing barbell rows, When I was doing shoulders she would come to the cable machine where I was doing lateral raises. She just wanted to be near me. We exchanged some contact information, and I learned she was starting college for graphic design. That's when the age difference really set in but I was actually really into it. I brought it to her, and she said the age difference didn't bother her with me being 33.

Even though she was 14 years younger than me we had alot in common, she was a huge nerd and we talked about similar sci-fi movies and games we enjoyed. There was natural chemistry there and conversation was easy, and the wild thing about all of this I knew she was waiting on me to escalate things.

The topic of sex came up, and I learned we had similar kinks in regards to BDSM that she wanted to try for the first time. Being tied up, D/s dynamics and all of that. To be clear all of this was happening over the span of a few weeks. We had lots of open conversations about the topic.

There was a weekend where I knew my wife would be spending time with her friend and I was messaging the girl (let's call her Katie) we met up at the gym and we worked out together while I waited for my wife to leave. I finally asked Katie if she wanted to come back to my place as it was empty and it would just be the two of us. I was still surprised when she jumped at the idea.

I decided to drive her so she could leave her car at the gym, and we immediately started kissing each other once we were in the same vehicle. We talked a lot about those desires we both shared (D/s dynamics) and what I wanted to explore with her and she was excited and eager to learn.

Once we got to my place we couldn't keep our hands off of each other and I had her get on her knees to begin. What followed was some of the best kinky sex I have ever experienced, just raw lust and passion as we explored each other for hours as she met me take the lead with her.

We have since talked about doing it again and truthfully am excited.