Dream of having sex

I had a dream that we were in my house with my friend my ex and another girl who use to be my friend but she's not anymore. In the dream I dreamt that we were all taking turns having oral sex, and then my old friend had sex with my ex and it made me angry. So I went upstairs and an old friend was there from elementary school and we talked for a while, then I walked back downstairs and they were still having sex so I went back upstairs and sat in my room.