"Ssshut up," Crowley hisses, not bothering to unslump himself from the tabletop. "You're in love with a human, you don't get an opinion."
"Better a human than a loyalist," Sherlock sniffs, and that gets Crowley to jerk his head up.
"Oi! He's not— I mean, he wasn't—"
"He was, then he wasn't, then he was again," Sherlock singsongs, before turning serious. "Once a good little loyal subject of Heaven, always one. Face it, the very fact that he hasn't Fallen means that he will always go back to them."
Crowley cradles his head in his hands, feeling far too drunk for this, or perhaps not nearly drunk enough. "That's not… He wasn't…"
A little tidbit of a scene from a much, much larger AU that I'm honestly not sure will ever get written in earnest, but that has been a project @sheliesshattered and I have circled back to many times over the years
This is post s2 of Good Omens and… somewhere in the BBC Sherlock timeline, probably post s2 but s3 & s4 don't really work with this au. Set in the universe of Tim Powers' novel Declare, though I'm hoping to write this such that you don't have to have read the book (but it certainly helps). Sherlock (and Mycroft, and others) are another form of Fallen Angel who have remained earthbound rather than ever joining Hell, and Sherlock & Crowley are ofc frenemy drinking buddies
More under the cut