Crowley might choose to tease harder at Aziraphale's comment if they weren't so damn nervous themselves. They're not even sure why at this point, since the two of them had seemingly been more comfortable with each other for a while now. This just feels so different... likely because it's formal.

Crowley clears their throat, the song comes to an end and they pull back just slightly from Aziraphale with a soft expression, the change in music being one that doesn't really lend itself to slow dancing anyway. "Why don't we get another drink?"