[Crowley hadn't been searching for whims. They just sort of appear. Like the Doctor can read time, Crowley can read temptation. The stronger it is, the louder it is to him. Sometimes, he has to searching a soul for it, others it jumps out at him like surprise encounter. This was that. He hadn't been searching for temptations right now, but he hadn't been blocking them out, either. And there it was, that temptation. It came right from his doppelganger. The demon shifted, giving the man a look, smug and knowing. He thought to nudge it, make the temptation too strong for the Doctor to resist, but there was something else there. Regret? Pain? Something unpleasant. So he left it be, and instead, slid to his feet with fluid grace. He leaned close to the Doctor's other ear,]

Batten down those psychic defences of yours, mate. You've sprung a leak. [It wasn't a threat, it was a friendly reminder that there were beings around with minds able to reach out. He hadn't even paid the odd wand any mind when it'd been aimed at him.]

Literal angel. [Crowley answered Rose after leaning back away from the face that looked so much like his, but younger.] Wings, holy smiting energy, flaming sword--before he lost it--the works. No harp, though. That's just silly. Like a demon with a pitch fork. Uh, demon by the way, me. Literal, again. This one can tell you, [He said, waving casually to the Doctor.] Just scanned me, yeah? Not human. Old. Me, not you. But you're not human either.