no, definately not! It obviously means that he's happy to say that your his girlfriend and wants everyone to see what a great girl he's got. But, if it's making you uncomfortable you could just quietly ask him not to be so forward with you!
it means he want to show off to his friends he has a girlfriend
The best explanation is really just to show off to his friends. He doesn't wanna seem like a loser to his friends so he says your his girlfriend
It's mostly because he wants to show off.
Most of the time boys try to show off to impress their friends... this is stupid it means that he is a complete and utter idiot and he needs to know that he should not be calling his lovely girlfriend names :)
She's trying to show off
It means that when he's around you alone, he's trying to be cool for you specifically but when he's around his friends, he wants to show off for them.
it's really not nice to show off on someone just because you have a lot of friends :D i hope i helped.................................^_^
He trusts and likes you enough to show you off to those who are close to him and what better way than to him introducing his work mates or friends to you
because if a guy does that infront of her friends she would try and show off or she things she to good for you. Next time that happens go talk to her while she is alone and try and just be friendly, give it some time.
if its specifically to you, then yes
no
to be nice