Can I keep my plans with a friend when my boyfriend is upset because he isn't invited but really wants to go?
Do you really think it will be okay to do that?
It won't! I fuck up in my life
Even though your boyfriend is upset, it is okay to have plans without him. He will be disappointed but it will be better than also disappointing your friends by inviting somebody that wasn't invited.
Boo hoo. I'm hiding my phone from him till I'm done with the plans. He'll probably like me more if I went.
He might be upset but you should be able to spend time with your friends. People need things outside of their relationship to have a healthy life.