The warmth of Aziraphale's orgasm, the feeling of him around him, holding onto him, within him, it's all too much----or, really, exactly enough. Crowley cries out as he comes, gripping onto the pillow by the angel's head as he does, and thrusting deep inside of him.

It's like a very tight coil that has been inside of him for a very long time has finally loosened, and every muscle in his body gets very tight, and then just as quickly relaxes.

Aziraphale pulls him into a kiss, and Crowley leans up easily to catch his lips with his own.