"Mm," Arthur says through a sip of his martini. He's not very good at faking happy, that's for sure, but anyone who's his friend by now probably thinks that's a good trait. They can trust he's never going to be fake. In cases like this he thinks of it more of a failing.

"Where do you two live?" he asks casually, trying to figure out whose territory they ended up in. Islington is the most obvious choice but Arthur would like to know for sure.