Please choose one.

I need help. I'm really depressed right now because my boyfriend of almost two years came out and told me that he had sex with somebody else. But we were in a huge breakup, and I had sex with somebody too.. ☹ should I stay with him? I'm really upset but I don't wanna lose him. I told him we could both work on it, and get past it. Should I still be upset over it.. 😓