My moving in party

I am not proud of this story, but I need to get it off my chest. I was moving into my first apartment as a junior in college. My 17 year old brother and a couple of friends helped me move. Per custom I paid them in beer and we had a pretty good party.
Eventually most of my friends left so it was just me, my brother, one of his friends and my new roommate. We were drinking pretty hard playing drinking games and our conversations were getting raunchy. My brothers friend Todd, who was trying to score with my roommate, suggested strip poker. Drunk we all agreed and had fun for a bit. None of us ended up naked, the game ended before then. I lost my shirt and bra, my roommate was down to panties only, my brother just lost his shirt and Todd was down to his boxers.
Todd and my roommate had enough and slipped away to her room. Before long we heard them fucking in there and couldn’t believe it. We were laughing at them as we went to the couch to keep drinking. I could feel myself getting wet listening to the sounds of sex coming from the next room, I could tell my brother was reacting to it as well. Neither one of us put our cloths back on before we went back. I barely noticed my brother staring at my firm 34b tits.
When we sat down my, I sat down first with him flopping next to me.