Fallen Angels (Ineffable Husbands/Crowley and Aziraphale)

After the near end of the world, Aziraphale and Crowley decide that they are happier when together and make the big decision to move in together, which ultimately leads to a romance that has been building up for centuries.

Good Omens (Crowley x Aziraphale)

Crowley and Aziraphale fall in love slowly over the course of this slow burn story. Prepare for broken hearts, tears. I don't own the cover art.