The day I discovers my girl was a slut

So my now wife and I have been together for 6 years married for 2, 4 years ago we was at a Christmas works party at a private function at a top hotel and like most Christmas party’s the drinks where flowing and everyone was having a good laugh after a while I thought I’ve not actually spend much time with my girl as I was just chatting to various other people so decided to to find her after awhile looking for her checking outside and all over the function room I couldn’t see her anywhere so I decided to head to the room as I approached the room I could hear very loud music coming from the room so I thought my girl must be having a little gathering in there with a few friends I opened the door walked in still no one in sight but the music was so loud. I then decided to check the bathroom that’s when I saw it my girl with her dress pull up her back and some guy I didn’t know pounding away at her the music was so loud they didn’t notice me at first as I froze there in shock eventually I was able to move and got there attention and they jump away from one another in fear but as he stood there I couldn’t help but notice to my shame how big he was down there he soon got dressed and left and as you can imagine my girl and I had a heated discussion but didn’t split as you know because we are know married, it was about 6 months after this where I admitted that the thought of that night actually now turns me on

Source: reddit.com/r/eroticliterature/comments/rrw6lp/the_day_i_discovers_my_girl_was_a_slut