Did something I’ve never done before at a Christmas party

So my dad's company has an annual Christmas/New Years party where they book a hotel ballroom and book out the a restaurant to invite all the familes and stuff. I have not been to the party in years since I found them to be quite boring when i was younger. I went this year because my mom had her own business trip she had to deal with and I know my dad likes to drink so i was gonna go with him and be his designated driver and ensure he does not do anything too stupid.

My dads boss is presented to be quite the a-hole from the stories i have been told and my dad is not the biggest fan of him. He took over the company from his dad and is quite the cocky and arrogant type of person, but my dad says he is a hassle, but is manageable since he does not see him that often anyway.I had not seen him since before i was ten and did not recognize him at all. (may have had some cosmetic surgery, but not too sure). He is a pretty hot guy i have to admit especially given his age.

So at the party my dad and I sat and ate and finished the at the buffet, we had a drink and then two of his co-workers who had recently retired came over to the table we were at, so i got up and let them chat while i went to check out the ballroom. I stood just off the dance floor to listen to the music when my dad's boss walked up to me and asked what i was doing alone. We asked me a few questions, then he said that there was going to be a practice new years firework show later and that he booked a room in the hotel to have a better view of it and invited me. I decided to follow him and he had booked a room near the top and there was a mini firework show that we watched but it was very quick and did not have too much to get excited about. During the minute or two test, he had put his hands on my hips and once it ended he started kissing my neck.

We eventually started making out and i have no idea what got over me, but i pulled his dress shirt apart and that let to us getting naked. We had sex in his hotel room and it was pretty good. We lasted around 20 to 30 minutes before he came on my chest. He let me borrow his shower to clean up, then I got dressed and left. I still think about it.