"I mean it, Dean. You're a good guy."
He did mean it. He didn't want to kill Dean. Maybe he wouldn't. Maybe he would just continue being Sam. He wouldn't have to be an engineer. Dean didn't boss him around. When he had messed up with the car, it was over a few minutes later. No lectures for days on end. And it would be awesome to have a brother. Sidney wasn't even like a real sister. They were just two kids who happened to live in the same house.
"You are drunk," Dean replied.
He was right. He had to stick to the plan.