“What I’m saying,” said Aziraphale, looking fixedly ahead, “and please don’t take this as a personal insult in any way, is that an angel and a demon can’t be friends.”
“Why not?”
“Because,” said Aziraphale, firmly. “It’s against the order of things. You’re supposed to tempt. I’m supposed to thwart. We can’t go being friends.”
*
A canon-divergent AU inspired by When Harry Met Sally.
London, 2019: While Crowley’s poking around the bookshop one day, he discovers Aziraphale’s collection of Regency romance novels, and starts reading—and is surprised to discover striking parallels to a long-ago summer...
Devon, 1817: Aziraphale’s only here to ensure that young heiress Margaret is set on the proper philanthropic path. And, of course, if Evil’s going to show up (in the unfortunately dashing form of Crowley) and start trying to lure her into iniquity? Well, it’s simply Aziraphale’s duty to make sure he doesn’t succeed—by keeping a very close eye on him...