Crowley was heartbroken.

Utterly heartbroken..

He remembered everything, the kiss to save it all, didn't work, angel apologized, Crowley told him to not bother, he left, Aziraphale left. That would be the end of it..

....

Right?

......

Wrong..

Crowley was sobbing and hyperventilating in his 1933 Bentley, the scene playing back over and over in his head.. It simply wouldn't leave him alone no matter how hard he tried to stop thinking about it, it would always find a way back into his mind.

He may be a demon(or fallen angel whichever you prefer), but he prayed each and every day that his angel would come back.. He didn't know if he'd be okay on his own, even though it had been a few weeks after what all happened.