if you ever need some classic ineffable husband fanfictions to recover from your current breakdown over the finale, may i present to you:
slow show (rated e, human au, maybe will cry but you will most definitely want to hug azi and crowley)
pray for us, icarus (start with flowers for anthony, reminds me of the finale kinda? but makes a lot of sense. you will definitely cry...)
demon and angel professors (start with catch me when i fall, aspec!azi, disabled!crowley, funny af, and heartwarming af! crowley is a dr in botany though...)
demonology and the tri-phasic model of trauma: an integrative approach (if you want to break down even more, then you can venture into this one... still one of the best good omens fanfic ever)
will add more when i can remember! please give me more rec as well...
also check out aziraphale's library!! they have so many recommendations!