He turns, wrapping an arm around Watson in return. He's still, largely, frustrated that he can't do whatever it is that Watson wants him to do, which is probably to go back in time and change what's occurred. He can't do that though, and he may never be forgiven, and this is all very irritating to him; he'd rather not think about it.

"Provided Moriarty doesn't return from the dead too, I feel certain that you won't have to again," he says, his hand settling on Watson's waist. "Do you think you can fit your husband in between everything else? Surely I can help with the doting on our godchildren," he says gently.