Can't stop crying

Alright so its my boyfriend birthday next week and he said he wanted a threesome , i agreed to it but I told him I had to pick the girl. He didn't want me picking the girl he had a girl in mind already and I felt dumb. I felt like he wanted an excuse to cheat on me. Anyways I changed my mind and told him no ever since then he started moving funny. He said he gonna be driving around with his boss on his birthday and if I wanted to come I can. Like wtf that's not even an invitation? And he's having a party with his girl best friend and his ex is going to be at the party. I told him I was coming and he said he gonna have to ask her if it's okay because he doesn't wanna make it awkward. Then this morning he broke up with me saying " I'm too much" like wtf.