This is what happens when you're raised by TV and trained in literary analysis
Beyond the crushing heartbreak of that finale, one thing in particular has stuck with me when I look at it in the context of S2 as a whole.
He lays out their relationship, "We're a team, a group. A group of the two of us. And we've spent our existence pretending that we aren't."
He then turns his head away and says, "I mean, the last few years, not really."
He pauses here, facing the interior of the bookshop. Really looks it up and down.
Turns back, "And I would like to spend" before choking on his words and looks toward the window. He can't finish saying something like "And I would like to spend eternity with you" because that's too much, too fast, for both of them.
But it's that "last few years" bit that has firmly lodged itself in my very broken brain.
According to Gaiman, it's been "a few years" since the end of Season 1. Armageddon has been averted. Heaven and Hell have reluctantly retreated. Crowley and Aziraphale have been effectively cut loose from their "sides," leaving them to form their own side.
So at the start of Season 2, we get a glimpse of the “fragile existence” they have carved out for themselves. To me, the biggest difference that we see is how they exist together in front of others. Going to the coffee shop, the pub, and the other shops along the street that Aziraphale has lived on for over 200 years. And don’t forget how they act in front of Nina, Maggie, and sweet, dim Muriel.
At the coffee shop, Aziraphale stammers a bit when Nina asks who Crowley is, but he still seems to have affection in his voice when he says, "We go back a long time."
Compared to Shakespearian "He's not my friend! We've never met before. We don't know each other!" panic, this is an incredible difference.
Of course, each time, Crowley is cool and cheeky and does nothing to indicate that they aren't a pair. Though, of course, he does deny it when Nina asks about Aziraphale being his side piece. “He’s not my bit on the side! He’s far too pure of heart to be anyone’s bit on the side.” And refers to him as an “Angel [swallows]I know.”
When they go the pub, Crowley's joy at doing something together in public that they do not normally do is super cute, including his cheeky order for Aziraphale's sherry. Then, when bringing the drinks over to the socially trapped Aziraphale, he greets Mr. Brown with a truly adorable, "Hello" and a signature DT smile. Then upon hearing how “excited” Mr. Fell is to host the meeting, he looks down and says, “Oh? You astonish me.” while Aziraphale sips his sherry and squirms.
We also watch as Crowley follows Aziraphale as he goes to each shop and talks to the owners about the meeting/secret ball. In theory, Crowley has no reason to tag along, and he certainly doesn’t help sway anyone who doesn’t want to/can’t go. He goofs around at the magic shop. He splays out on the bench, chin on hand, looking for all the world a husband waiting for his wife to pick out a dress at the department store. They are so married it’s ridiculous.
Finally, their behavior in front of Muriel while inside their sanctuary. Crowley sits on the arm of Aziraphale’s chair, somehow looking supremely comfortable on the old-fashioned furniture. He folds up those gloriously long limbs and presses himself as close as possible.
He smiles and plays along with Aziraphale’s coaching of Muriel in her disguise. Calls him Angel and asks to speak in private. And at the end, during the awful wait while Aziraphale talks with The Metatron, Crowley cleans up the shop and tells Muriel that he and Aziraphale will need some “us” time after all this. No beating around the bush.
Without oversight, they can be openly together and happy. But Heaven just can’t let that happen.