Boyfriend and holiday

I made a poll earlier about this which you may have seen but I want some feedback.

My boyfriend said he didn’t want to go on holiday with me when I suggested it a week ago. But today he’s just told me he’s gonna go on holiday with his friends from college. It would be him one other boy and three girls.

I just don’t know how I feel about this. I guess I’m just hurt he told me no and his mates yes.

What do you guys think? Am I just over reacting?