"Er..." Aziraphale said, staring back at Crowley's mouth, hearing Crowley's voice, and then leaned up and-

(His lip is swollen, his brain said, most redundantly.)

-kissed him, hands resting on Crowley's bare forearms, fingers curled around the muscles there almost imperceptibly. The angel kissed him, trying to be gentle, gentle was his nature but this was Crowley so close to him, Crowley's lips...

(It's hurting him.)

Aziraphale let go, and stepped back. "I'm sorry," he said immediately. "Are you quite - how's your mouth - I'm sorry."