The moment Sam reaches for Castiel's hands, he worries he did something wrong. But he's learning to understand that Sam will always find a way to gentle his fears and worries with kindness and reason. He isn't in a rush to knot Castiel, and the omega is relieved. He doesn't feel ready enough, doesn't feel prepared enough. Doesn't know if he ever will, with all the myth spooking through his head regarding what he's to expect in bed.

So he kisses Sam and steps back a little, begins shrugging off his jacket and unbuttoning his own shirt slowly, never taking his eyes off Sam. Baring himself to his husband inch by untouched inch.