"You very much are." Sam leans down, kissing the back of Castiel's neck. "Rest. Just for a little longer, then we'll eat. Then we'll dress and get out of the bedroom."

It's not the easiest thing in the world, working through things. But Sam does switch the collar out the next morning for their blue collar, a certain sign that all is forgiven. From there, it's only a matter of waiting until Castiel is healed.

The day that Sam wakes up to Castiel still asleep and laying on his back (some nights, they both move a lot in their sleep) is probably one of the best for Sam. He smiles, leaning over to kiss Castiel, fingers drifting up to play along the top of the collar where it met Castiel's skin.