no you don't understand. *crying my eyes out* *visibly shaking* You Don't Understand you don't understand because for me THIS is one of the most heartbreaking parts of that whole scene:
i would like to clarify that this is not an aziraphale hate post But. the thing is. with the whole discussion about aziraphale leaving for heaven and crowley choosing not to follow, it's all very subjective, right? like both sides had their reasons, both left devastated and reasonably so.
but this scene right here, the absolutely heartbroken look on his face RIGHT HERE is so undeniable, and it's a product of centuries of aziraphale NOT LETTING HIM SPEAK. which is really funny for all that talk about how crowley goes too fast and wants to get everything done immediately, aziraphale is always the one interrupting him and dragging crowley along everywhere.
and for the past 6000 years crowley has been okay with this, but this is the point where him being able to say his piece really matters to him but he can't. even when he emphasises how important it is, that if he doesn't say it now he probably won't say it again, aziraphale is too preoccupied with what he wants to say that he completely disregards this. and you can see the effect that the years and years of them not listening to each other finally has on crowley.
his "really?" is like him saying "you're seriously going to ignore what i said even though i've told you how much this matters to me?" and it's worse because what matters to crowley is literally aziraphale. now i don't know how his mind works but if i (Overthinker) were in his position i would be like oh... what if this means i don't matter to him as much as he does to me? and then RIGHT AFTER THIS aziraphale insinuates that crowley would be happier as, or would want to be an angel again. not considering everything that has happened to him. it makes me so so freaking sad y'all