Rin gives a shrug, mostly because he doesn't know how to quantify what Dean's told him against what Dean hasn't -- more than enough to regularly satiate Rin's curiosity. He isn't nearly as incisive, about anything, as his brother.

He likes the idea that Castiel stuck around just for Dean, though; his tail betrays him, giving a slow wag from side to side. "So you stayed with your friends instead of going back to Heaven?"