An Ineffable History

The Nice and Fairly Accurate History of the demon Crowley and the angel Aziraphale, on their relationship over 6,000 years.
Aziraphale and Crowley have known each other since the beginning, quite literally. From the gate of Eden to the end of the world, they have been there for each other- tempting, thwarting, and even helping (not that their respective head offices need to know). As the millennia go on, the two grow closer and closer, and there are words that both off them need to say, but neither do. It only takes the end of the world for them to get their heads on straight.
AKA: Aziraphale and Crowley being pining idiots for 6,000 years.

Cross-Posted on Ao3 under the same title