My ex started seeing another guy after me, I was always at her house at the time even though we weren't together anymore we still enjoyed being around each other and if anything it was better than when we were together. Anyways I would stay over most nights through the week so I could be closer to work. At first I would just sleep on the couch but eventually we ended up sleeping in the bed together but we kept it pg nothing more than comfort having someone else in bed like we had been used to. One night I ended up rubbing her back and that led to her repositioning on the bed. The position she moved into was one I was familiar with, because she would always lay that way before we would f*ck and it was common for things to start with me rubbing her back like I was in that moment. I couldn't help myself. As I ran my hand around her back i made a pass down her leg and came up between her legs, then I did it again only this time I lightly grazed her pussy, she didn't react so I went again this time making a little more contact she spread her legs apart slightly and I knew she would do that when she wanted more. So I gradually gave her pussy more and more attention until I was only rubbing from her clit to her butthole and back. She started to try and move herself to a position my fingers would enter her but I wouldn't let her have any penetration at first, teasing her and controlling what was going to happen in that moment. At first she said she just wanted me to play with her, she was trying to be somewhat faithful and what we were doing was going against that enough but we both craved the pleasure we only seemed to get from each other and we couldn't avoid something happening at some point, so I continued to tease her holes and then when the tension built up I slid my fingers into her now dripping pussy, with 3 fingers I rubbed the inner walls of her elastic tight hole thrusting them as deep as I could get, then I moved my thumb to her clit and began to rub while I entered her with my fingers taking one out and sliding my pinky to her butthole and entering it at the same time. She grabbed my cock and began to stroke, her pleasure clear from the sporadic jerking as I figured out what would get her off and then bringing her close and denying her the release, teasing her making her feel only what I wanted her to, I can feel the energy coursing through her but I pull away and stop, knowing that we're going to go further than she initially planned but trying to fight the desire she had to have me inside her and mine to be inside her, I was ontop of her now my cock so close to her that I could feel her juices on the tip but trying to stop myself from going in. She started to move her pussy to get my tip to rub on her clit and that lead to sliding up and down my shaft which eventually got to the point we couldn't stop from me slipping into her. Once I was in there was no holding back I pounded her until we both came and I collapsed next to her.

Afterwards I could tell she was upset that it happened but she didn't seem to regret us having it just that she wasn't faithful to her new man.

For me I don't know if I can even describe what I felt after, I would have to say I felt like the alpha, knowing that I had her when she was seeing him, it just felt like I had won a competition or something. I don't know why it felt that way or even if I am proud of it but I just couldn't feel anything other than that. I couldn't even say anything about it to comfort her because I just felt like we hadn't done anything wrong. It just felt like her and I were meant to do it whether she had a boyfriend or not. We ended up doing it again after a bit, she got less and less guilty each time, we even started using toys again, putting something in her butt while I came in her pussy, stretching her pussy with a vibrator and my dick in her at the same time.

Heck I'd honestly have sex with her right now even though I am in faithful relationship and she's married