his birthday

My boyfriend turned 18 yesterday. He went clubbing. He wa meant to come to mine today at 5 because my family organised to have a cake and dinner for him and now he's saying he won't be at mine until 8. I told my mum to tell everyone not to come and my nan already ordered and bought his cake. 
I think it's so rude that he's choosing to go to the pub instead of original plans ? 
Like we were doing something nice for him