This is so good! I love the deep dive you do into different eras in history, showing Aziraphale's feelings evolving. I especially enjoyed the scene where Crowley kisses him on Christmas Eve. The poor demon was trying so hard to express himself, to find out if Aziraphale could feel the same. Why can't they ever just use their words!

And the ending was so sweet. I like that Aziraphale was ready to reach for Crowley again as soon as the world was safe and they were retired. They were so happy and in love!

You've done excellent work. This story really is great!