I won't, Cas. I won't forget and I hope you remember that. I'm afraid that someday, I might have to stop you. After everything you've done for me, for Sam... [He stops. He did consider Cas a friend, he thought of him as family, but it almost felt like he had used that against him, that it didn't matter. He doesn't say the rest of what he was thinking. He just ran his hand down his face with a tired sigh.]