so, Crowley was a Seraphin right? And Seraphins kinda of have fire on their skin or smth like that for what I have seen. So, when Crowley felt, he actually felt how fire was for the first time and it probably hurted SO MUCH because like, it was the first thing he ever felt and the first pain he ever felt
So, when he discovered that the bookshop was burn and was fucking angry because he thought that aziraphal(idk if I wrote it correctly sorry T_T) was hurted like he was, and like.. He thought he would never ever seen him again because it was the end of the world and he thought he left while being burned and ig that's why he was just drink his ass off
Anyway, never saw someone talk bout this so yeah..