Hello! I would like to recommend the fics The Sandford Flower Show and its sequel/alternate ending Tabula Rasa, both by Mussimm. The second one is heavy on emotional angst, but they're both SO good, some of the best works I have ever read in any fandom.
The Sandford Flower Show by Mussimm
Crowley had waited six thousand years, kept it all in check. But this was the slipperiest slope he’d ever set foot on and as soon as he’d indulged in a few discretionary acts of kindness he was falling face first into pining, tumbling into flirting, about to dislocate his knees on the sharp rocks of intimacy.
Was this really it? What he had waited six thousand years for? A stupid flower show? Aziraphale wasn’t pulling away from him. Maybe… maybe this time he wouldn’t? Maybe they’d hold hands again. Maybe tonight with a bottle of merlot in them he’d finally work up the courage and just kiss him and he wouldn’t pull away.
The very moment he’d thought it he spotted the problem at the flower show.
Alternate ending to The Sandford Flower Show, if Aziraphale had never plucked up his courage and fixed things. You need to read the first one to understand this one.
Mephistopheles was good at her job.
It was a strange thought to find comforting, but it was one Aziraphale clung to. Sometimes it was easier to think of his life in the broad strokes than to suffer through each moment of it. If in his mind he was the hero of a Shakespearean tragedy, his life crumbled to dust by such human foibles, then there was a certain dignity at that. He had lost, but at least he had been playing against a master.