Are you stupid?
Yes, it is a good thing....... he is proud to have you as his girl friend and he is showing you off to his friend...... kinda like a proud peacock displaying his feathers. (go with the flow --its good)
Then I would confirm where this relationship is at........ he may think you are an item - ? ? ? ? ?
it's an ego thing, just go with it.
Yes. He's proud to have you and not afraid to be seen with you in front of friends.