[Crowley leans into the embrace, just grateful for the warmth of Aziraphale, even just for a moment. He has to be alive, because Hell doesn't make embraces like this.

He pulls back, enough to look down at Aziraphale seriously]

That's why I had to go, angel. I had to go to the Lighthouse. I had to stop what was happening, I had to find a way to wake you up.