At current, there is a very high and very real possibility that Aziraphale might let go of the hands in his and walk away. It isn’t necessarily that he doesn’t want to hold Crowley’s hands (he does—very much so, in fact), but he's still angry. He's still so angry at Odin, at Crowley, at this entire place, and everything surrounding it that he's not yet able to calm himself. It's the primary reason why he barely acknowledges that he's holding Crowley's hands at the moment, far too focused on what he's going to do next.

He does have to do something, doesn’t he? There isn’t any choice anymore. He can’t overlook this. He’s already overlooked so much during his days here, but this is well past his limit. Well past, really. This concerns him directly and there is so, so much to be discussed. Crowley owes him more answers than he's already given because Aziraphale still has so many questions he's yet to ask and Odin owes him answers to all of the questions he did ask, but Odin failed to answer.

Actually, Odin owes him a hell of a lot more than that, but that’s to be addressed at another time. Or perhaps all at once. He hasn’t decided yet.

“I wouldn’t have told you about something like that either,” he admits, which is probably a bit too honest and acknowledges that something more than hand-holding was-slash-is a possibility. Unfortunately, he’s a bit too distracted by his own thoughts to give them any proper consideration before blurting them out.

Immediately, he follows up to make sure that Crowley doesn’t get the wrong idea.

“Not that it did, mind you!” he insists, knowing that there was the odd chance that Crowley might get the wrong idea stuck in his head or decide that Aziraphale hadn’t been entirely truthful.