Ran into an ex co-worker at a friends bday party and end up having amazing sex at my office[FM]longish, cheated

Long time lurker. I figured it was time to give something back since I recently had a great experience that came as a surprise. Names changed to protect the not so innocent. Yes, we both cheated. No, I don’t feel bad. You don’t know my personal life so don’t judge me, I don’t really care.

This event happened about a month ago, and has played out over and over in my head the last few weeks. The story starts back several years for context.