[At the mention of sharp instruments, Aziraphale's hold on Crowley turns a touch protective, brow unconsciously wrinkling in concern. He knows that there is a way to combine sex and pain consensually, but considering that Crowley's previous partners were other demons, he's not inclined to give them the benefit of the doubt.]

I'm not harboring any dark desires, I assure you. Aside from the occasional love bite now and then, but you seem to enjoy those.

[The only thing Aziraphale wants to overwhelm his demon with is love and praise. They can work out the specifics later. Although a certain idea springs to mind when Crowley mentions ropes and scarves, one that sends an unexpected shiver through him.]

Oh, well... if you're interested, perhaps we could set up a... [A blush appears on his face before he hides it in Crowley's neck.] ...a scene? One in which I've gotten into a spot of trouble and you need to come to my rescue?