Coyness isn't really a strong suit of Castiel's. Even now, in his relationship with Crowley that's fraught with lies and deception, it isn't about playing coy so much as being blunt about other things. And here, where Castiel's particularly lost and wants to perform well, he'd rather ask outright; how else does one learn?

While he would like to press Crowley to let him do more for him, Castiel knows he couldn't do what Crowley just did; maybe this is the better option for now, especially considering he's not sure what to do even with this. How loose is too loose, how fast is too fast? Probably he ought to start slow and build up. He nods almost imperceptibly and starts a slow and steady rhythm, without many frills to it.

He enjoyed the orgasm and everything that led up to it immensely, but he finds he enjoys the attention to his neck just as much in other ways. It warms him, especially as he hadn't expected the demon to be tender at all; he isn't fooled by any notion of fondness or kindness, but it does give him some form of comfort, or a familiarity that the use of the nickname compounds. It doesn't slip by unnoticed, and it almost gives him pause, until he he starts copying Crowley, kissing his neck and trying to emulate the breathy quality of his attention.