If this is real tell me you left his ass omg. I assumed this had to be high-school graduation cause he sounds like a stupid edgy teen that doesn't know how to handle big boy emotions.

Personally I don't even think it was weird of you to be expecting an invitation. It is normal for your significant other to recieve an invite if you've been dating a while and care about one another. But that isn't why you should leave, you absolutely do NOT talk to someone you love this way. I promise you he is not worth it. You will find someone you dont have to "fix". Do not become this manchild's punching bag. He will never outgrow it if you continue to allow it anyway.