Maybe having a girlfriend makes him feel cool? Maybe he's afraid people think he's gay? (And maybe he is and he's closeted?) Maybe he thinks having a girlfriend gives him relationship cred? Whatever the reason, I think it's odd to mention her every session and it would bug me. I don't see what you gain from his disclosure that his girlfriend is uncomfortable in crowds. I don't see the benefit to you in his bringing the conversation back to himself so often.