He is so unchanged. Castiel would have thought the years would have changed him. It's been almost a hundred years since Dean died but apparently the company he'd been keeping before he was locked away did little to change his personality. Castiel finds that it pleases him and he smiles, but only for a moment before he tucks it away. It's inappropriate to do so now. He offers Dean a hand, though he knows he really doesn't need one.

"It's me, Dean. It's ..." No shit it's a long story, but what else can Castiel possibly say? "I'm sorry it's taken me so long to get to you. I only just found out."

He feels entirely inadequate right now, which is sort of amazing that Dean can still inspire that in him without really trying. Still he's supposed to know everything that's happening at any given time, and yet he had let himself become distracted from this, from Dean, as if anything were more important.