"Wrong," Jimmy said simply. "I am him. You just need to wrap your head around the physics of the situation. And you've never once referenced it in a single email, and I doubt it'd be left out. I'm not saying I'm not interested; just that you never were."
The advantage of knowing himself as well as he did was having access to everything he did, including things he thought were private. And they were, since the only person sharing them was himself.