Idk I’m angry but don’t know if I’m over reacting

Boyfriend help hosted a family friend party at his house place last night and he didn’t respond for 5 hours...

He said he was running around and didn’t want to be rude..

But I still think 5 hours is a bit much.

Well, I’m scheduled to attend another one of his family parties on Sunday where I will meet his whole entire family and I told him I can’t come because I’m sick (I lied because now I don’t want to see him or meet his family)

I’m pissed because he didn’t see anything wrong with what he did