<human>: So here's the entire story:

About 3 months ago my best friend and cousin, Jeff started going out with this girl named Carrie. Jeff was not very committed to the relationship, (he would still try to fuck other girls if he could) and she was. I thought this was wrong but I never said, or did anything about it. Fast forward about two months, and they broke up (for some unrelated reason).

Fast forward about another month. My friend Steve brought Carrie over to me and Ricks (my roommate) house. I had been drinking a lot before she came, and when I saw her, I drank some more. Carrie is a good looking girl and I was very drunk. I asked her if she wanted to have sex. She said "I'll think about it". 

A couple minutes later I saw her and Steve go into a bedroom together. When they came out I chatted with them for a bit, and went to bed. A couple of minutes later she comes in my bed. We have sex. After that she got out of my bed, and then i went to sleep. A couple hours after she had sex with me, she went to Ricks bed, and had sex with him (I found this out the next morning).

When I woke up the next morning I felt like shit psychically, and emotionally. I felt to the need to tell my cousin that we all had sex with her, so I did. He flipped a fucking brick. He told me that he hated all of us, and especially me since we have literally known each other since birth. I told him he was overeating, that he had been completely done with Carrie for over a month, and that he treated her like shit when he did date her.

He said none of that mattered, that he was going to "fuck me up" when he got back from his trip at the end of the week, and that I fucked up our friendship because of what I did. I tried to talk to him, but every time I do he just goes into a blind rage, and doesn't seem to care about anything I have to say.

Could you distill the essence of the text into 1-3 sentences?
<bot>: I, along with 2 other guys (not at the same time), fucked my best friend/cousins ex-girlfriend whilst drunk. He tells me he hates me now.