Guh, I love this. I have a soft spot for fics with Sam's POV on his brother's strange relationship with Cas, mainly because he almost has an outsider's view of it, which is weird 'cause it's Sam. There's not enough of these fics, so thank you SO much for this. Even better, the characterization is on-spot--non-schmoopy Dean, understated Castiel, and a Sam who can't decide what to make of a bond that formed while he wasn't looking. Great, great work!