yonmei - Write me a story based on daegaer's Five reasons for Crowley to love Aziraphale.

Five reasons for Aziraphale to love Crowley

1. He never eats the last piece of angel cake.
2. He doesn't read much.
3. For a demon, he's quite a decent chap.
4. It really isn't that hard to manage him once you get the knack of it.
5. Well. It's probably ineffable.