WOW, I liked how you started the fic, and that we find out only a little later where Dean has been going at night.
Dean turns his face into the light and Sam thinks of marble angels instead of stone monsters
Loved this bit.
It's just for a second, when Dean glances out the window, just long enough for Sam to see Dean's face, longing for something that isn't in this room
And this one...so sad.
You are getting me hooked to vampire!Dean!