Crowley could really care less what attributes Aziraphale gives himself----either, both, neither, as long as they're connected, he's comfortable with it. So long as Aziraphale is attached to whatever is or isn't there, Crowley is on board. Having something to work with makes it a bit easier, of course, and Crowley immediately shifts his body to move his hardness against Aziraphale's newly created maleness.

He wants to share with Aziraphale, more than just the sexuality behind their touches and movements, but more of himself, in the way that humans can't. After all, they can connect, they can touch, they can feel each other. Why not share both? And he has so much he wants to feel from Aziraphale, so much he wants to know about him. Again, he's a bit greedy.

He cups Aziraphale's face as they kiss, and shares his desires. Physical, touch, and to know him, to share with him.