greetings. below, i will explain my current personal interpretation of crowley and aziraphale's relationship (because it *has* changed quite a bit since i first watched the show, along with me just evolving as a person, and with the way i interact with media), as someone who currently identifies as a genderfluid lesbian on the aroace spec. i'm also neurodivergent, which i think is relevant. i'm posting it here in case anyone wanted a fresh perspective or even agrees with me! this is MY opinion, and you're very much allowed to disagree with me. just don't be horrible about it.
a very popular interpretation i mainly saw some years ago was of them being two men in love (romantically so). i think a lot of people have moved away from the "men" part of that, and i'm delighted to see that so many people mainly interpret them as gender diverse now! about that other bit, though -- i'm not saying they're *not* romantic. they are. but that is not, by *far*, all they are. at all. their relationship and feelings toward each other include romantic elements, of course, which is clear for all to see. but they are not, and never will be, in a romantic relationship.
they are celestial beings. they had the opportunity to exist and get to know each other *before* human customs and practices. the love they have for each other *predates* humans, and therefore by default does not, and has never, fit into human labels. now, do i think they're queer? yes. why, when i just said they don't fit human labels? well, queer is an interesting word to me. my interpretation of a queer relationship is one that does not, and does not try to, comply with cisheteronormative ideals and rules. this can (doesn't *have to*, but *can*) apply to every relationship other than a romantic one between a cisgender man and a cisgender woman. even platonic relationships, though i realise they generally aren't included. this also isn't to imply crowley and aziraphale are platonic -- the whole point is that their relationship transcends the capabilities of practical (or rather, conventional) human language.
crowley and aziraphale love humanity, and it shows by how many human customs they have adopted -- food (and generally convening around mealtimes), material possessions, walks in the park, even just taking part in society, really. the kiss, to me, was a last-ditch attempt by crowley to do something undeniably *human* and *physical* in order to try to anchor aziraphale physically to the earth, since the emotional version hadn't worked. it wasn't out of character, definitely, but it's also not the sort of thing i see crowley (OR aziraphale) doing under normal circumstances. yes, crowley and aziraphale have adopted a lot of human customs, but definitely and decidedly not all -- yes, they consume food and alcohol, but they don't hesitate to get un-drunk in a very *non*-human way; yes, they own things, but they also *keep* the same things for much longer than a human lifetime; yes, they enjoy the fresh air once in a while, and like partaking in society, but aziraphale also keeps himself locked in his bookshop for weeks on end, and crowley sleeps for *months* on end. they don't adopt *everything*, at least, not without adding their own twist to it. i think the same would apply for their relationship. it's incomprehensible to anyone other than THEM, and they might choose to do some human things to express their love for each other, because they also love humans and by extension human customs so much, but there isn't necessarily a label for the love itself.
and the significant part to me is this: *this doesn't mean their love and their relationship is any less real or important*.
the reason i love their love so much is because i resonate with it deeply. it's like it was written *for me*. as mentioned before, i am neurodivergent and on the aroace spectrum, and i'd like to clarify some things before i elaborate: i do and have felt romantic love, and my ideal partnership would resemble crowley and aziraphale's a lot. a partnership of many elements: romantic, platonic, what have you, but not necessarily any of them exactly. i've never seen a relationship like the kind i want, i've never seen feelings depicted on screen like what i've felt, and i've been explicitly told by people that what i feel can't be real, had people try to force me into preexisting boxes before. but i simply don't interpret the world, and especially something as personal as a relationship or partnership, in an alloromantic, allosexual, cisheteronormative, neurotypical way. i can't help it! it's just not how i was made. and good omens? well, it just subverts that completely. by having crowley and aziraphale as non-humans (but importantly still as people who live like humans), it eliminates the expectation that humans in the real world are born with to conform to societal norms (as partially seen by the circumvention of gender norms by crowley, for example). sure, you *could* make a show about *humans* actively *rejecting* these things, but then that's what it would HAVE to be, because as society would have it now, the default is as described above, and to not conform to it would be to fight it. and then the show becomes more about the fighting than the living. but not in good omens! ineffability is one of the main *themes* of the show, and as ineffable as crowley and aziraphale's relationship is, is *allowed* to be, so i think too human relationships can be and can allowed to be.
in short: i feel seen. the love i have, the love i have to offer, is not conventional, is not something easily described. but it's real, and important, and possible. that's what crowley and aziraphale show me.