Try turning that flaming sword of yours on him? [Aziraphale isn't a violent type per se, but Crowley knows better than anyone else what Aziraphale can do when he's truly angry.] Maybe you could kill him, but I doubt it. The ranking is all pear-shaped where he's from; archangels aren't supposed to be that powerful. For all I know he could turn you into a column of ash before you even raise your sword arm.
[It's the sort of thing that has haunted his nightmares for months now.]
And then what? I have to come back. I have to come back and see what he's done to you.
[At some point Crowley started balling one hand into a fist and squeezing, digging his nails into his palm. The pain is at least keeping him from screaming.]
I'd probably do something stupid, like try to kill him myself. And around and around we go.
[action]
[It's the sort of thing that has haunted his nightmares for months now.]
And then what? I have to come back. I have to come back and see what he's done to you.
[At some point Crowley started balling one hand into a fist and squeezing, digging his nails into his palm. The pain is at least keeping him from screaming.]
I'd probably do something stupid, like try to kill him myself. And around and around we go.