What do I do??(sorry if it’s too long)

Jenna

So last night my boyfriend, his best friend and I were hanging out. We had just seen a movie and when we got back to my boyfriend’s house we had started drinking. Everything was all fun and games, a pretty good time. Then when we started to get to the hungry faze me and jack(his best friend) went upstairs to make some pizza rolls while Cole(my boyfriend) stayed downstairs. As we were standing in the kitchen jack started talking about random things, as usual. Then we got onto the topic of Cole going into the military, and in a joking way I asked if he thinks Cole would ever cheat on me while he was away. Jack shook his head no but then started on about how much Cole talks about fucking my best friend and how he wishes I’d have a threesome with him and my best friend. Remember, we are both still drunk at this time and I was mainly focused on eating, but I did definitely take that statement in. Later on I had mentioned this to Cole, he never denied it and got pissed that his friend told me that. That’s when I knew it was not a lie. I cried and slept on the couch that night. Now I am confused. Am I being too over dramatic? If I’m not then do I break up with him? We have been dating for almost a year and we are madly in love with each other. He never snap chats a lot of girls, doesn’t flirt or talk to a lot of other girls. He is an amazing boyfriend and is my everything and I can’t lose him, but how do I live with the fact that he wants to fuck my best friend? I can’t feel comfortable hanging out with them at the same time now. Do we just have a serious talk and let the relationship move forward? I don’t know what to do.