And oh fuck if Cas is understanding this sensation correctly -hard to tell, everything's fuzzy- Dean's just as turned on as he is. Cas gives a full-bodied shudder at that knowledge, straight down his spine and shaking his core, and he pants before kissing Dean's jaw, drags his teeth over the shell of his ear, pulls his lobe between his lips and sucks. He can't move ok he's making out with you, can't stop doing that, not even for a second.