Se la chupe al papa de mi novia

People I'm going to be brief since I had posted and they deleted it because I was in all caps. I've been dating for almost a year now and at a family party about a month ago, my fiancé's father and I started playing cards. After drinking a lot and talking about everything, we started challenging each other on who was the son of whom, and who won at what game, football teams, poker, etc. The thing is that this challenge ended up being who has the biggest one, but literally it was a bet for a whiskey. Obviously the one who lost had to pay. Well, I lost haha, the thing is that when I pulled out my cock he looked and couldn't believe it, it was huge. The thing is that the guy realized I was getting hard and laughing his ass off told me you like promiscuous don't you? (and he was laughing). Honestly I'm not sure if he had something repressed or what, because I never pay attention to a man or anything, but honestly it gave me terrible urges to touch him. My response to the joke was: And I'd give him two more hits haha. Then there was a challenge of one and then the other where you don't dare to touch her, where you don't dare either etc. The thing is that I don't know how we ended up sucking each other off with such terrible urges that couldn't stop. This went on until I realized it wasn't giving and he was my fiancé's father. The thing is that I would have loved to keep going. Well, the truth is that I still haven't gone back to my fiancée's house since then and honestly I've jerked off more than once thinking about this... Honestly I don't know what to do.... I hope for opinions, because honestly I didn't know I liked chicks? Is it morbid or what?