Would you be upset?

So the guy I’m dating went to a get together at his friends house. It’s one particular group that always hangs out together. I’ve met this group it’s a mix of guys and girl. We’ve all went to the movies together. Well lately we hangout everyday. And almost every weekend. They’ve been begging him to hangout, even inviting me along. Well we always end up just staying at his place. Well this one chick from the group decided to have a dinner party. But I wasn’t invited. He didn’t invite me at all. Just said I’ll be busy Thursday.... would your feelings be hurt?