"But you didn't find another lodger," he points out, and he hopes, prays this fact is as significant as it seems. Watson could've moved out; he could've found another lodger. But no -- he didn't hate Holmes when Holmes was dead. He wonders if this had been part of Moriarty's plan too, if he'd considered what would happen if Holmes did come back after lying to Watson; had Moriarty planned the particular death that would come from Watson shutting Holmes out of his heart?

He can see that Watson's unable to look away from him, mostly because he's unable to look away from Watson either. Though there have been miles between them for the past three years, he hasn't felt farther from Watson than he feels right now.