It goes beyond inviting. Crowley crawls forward and sinks into his angel's embrace with the air of someone coming home, which he is. It's the only place he's ever belonged and the only one he needs.

"Angel, angel--" Kisses on the mouth, on Aziraphale's jaw and neck, as their bodies undulate against each other, skin sliding against skin. "My angel, Aziraphale--" His cock is still hot and hard where it's trapped between them but he kisses Aziraphale's face as though he needs nothing else, only this. One hand strokes along Aziraphale's side, the other presses his hand to the mattress, fingers tightly entwined.