Castiel looks over at him, probably violating some sense of personal space, but he isn't thinking about that. He's staring at Crowley, yes, but he's waiting to see if there will be some moment of recognition, some kind of memory that might let him know who he was, and who Crowley is to him.

"Thank you," he says after a long moment of staring. He turns back to his pizza, but he frowns at it instead of picking it up.

"I wish I could remember any of that."