The disappointed look on Aziraphale's face as Crowley draws back is clear, though in truth it's only because he's stopped kissing his neck. Though it is always nice to see his face... His endearingly beaky nose...

"Well. I wouldn't forbid you from it," he admits. "And to be fair, you're the one who brought up having to hide anything from cameras."

Possibly he brought that up as a joke, though. He's unsure on that part.