Mia: Yes and no.
Yes, because if he's your guy, why wouldn't he want you to be there sharing his mom's ribs?
On the other hand, men can get weird when it comes to bringing girls home to mama. Maybe he's not ready for that kind of scene yet.
If I were you, I'd give him a pass - this time. But if he acts the fool come, say, July Fourth, then it'll be time for some fireworks.