Danger is Sherlock's life, but this game of Moriarty's pushes it beyond anything else Sherlock and John have ever known. When the game is this deadly, there can only be one winner. And when you're playing for your life, you need something to live for.

John knows he has an unusual relationship with his flatmate. He knows their friendship is complicated. And yes, he knows everyone assumes he's in a relationship with Sherlock Holmes. But he's not. Obviously. It's not like that. John would know. Right?