Draco seems to give the matter serious consideration, and he might give Billy a hand with the rolling if he needs it.

"Find an alternate course of action, I imagine. ...Might depend on why you said no. If you wanted to be punished for disobeying that could always be arranged. If you were just particularly interested in seeing me, well I could hardly blame you." His tone holds some dark humor, but it's an honest answer.

Once he's satisfied Billy's settled, he nips lightly at the nape of his neck. Then Draco's eyes fall shut while he takes his time trailing his tongue and searing magic from there down along the center of his back, circling a bit tauntingly as he reaches the small of it.