Mistake With Ex's Son

I recently moved from a tiny town in the Midwest to a tiny town on the California coast. I had to go back to sign some paperwork, so I stretched it out over the New Year's weekend to see a couple friends. I just couldn't get in the party spirit, and sucked out early to a local pub that makes great fried pickles (don't judge, they're good). I made it just before the kitchen closed, completely forgetting my ex's son works there.

I forgot how sexy his son is. Not as tall as his father, but great shoulders, curly blonde hair, blue eyes and a big blonde moustache. I remember thinking 26 is such a perfect age for men. So strong, not yet beaten down by life, eyes still sparkle and the cock is still strong as steel. I was always attracted, and swore I felt chemistry a few times, but as I was with his dad, it never went further than that feeling.

At first it seemed like standard politeness, but it was comfortable, so when he invited me back to his place, it honestly felt so innocent. Just a couple friends, having a couple beers, watching the ball drop. I remember going out for a smoke. I remember him handing me a beer and looking up at the stars with me... Then it's like I went in to a fugue state or something. I didn't black out, it's not like he "slipped me something", it's like I lost time, and when I "came to", I was up against his balcony rail, my legs were wrapped around him, mt hands were in his hair and gripping his back and I was cumming, HARD. I could feel him pulsing inside me, his face was in the crook of my neck, grunting as he came with me. It was like I was returning to my body or something.

We stayed like that for what felt like minutes, but it was probably 30 seconds. He stayed inside me and started kissing me and telling me how long he's wanted to be inside me, how amazing it was to feel me cum. He said he could "feel me cum from the inside", which for some reason brought me to the brink again. He could tell, and he smiled and started to suckle me, bringing me to convulsive orgasm again. We went inside and ended up making love all night. I went back to my hotel room in the morning, before he woke, packed up, and left without a goodbye.

I don't regret it. It was a beautiful night. But I do feel like I betrayed my ex. I don't want to hurt him. He's a good guy.