[John takes a moment to check his mobile, scowling at the screen and looking about for any sign of Sherlock. He had to have been nearby. He just had to. He looks up, however, when she mentions that she'd read them in books of all things.]

Sorry? Oh. Well, I'm still trying to sort all of that out. I've had a few people surprised that Sherlock and I are the way we are. No, I was born in 1971.

[John takes a moment to text Sherlock back and then smiles pleasantly at Gwen.]

How long have you been here? I don't think I've seen you before.

[Text]
How could you possibly
know that?If she were, she
wouldn't be flirting with me.