i could never be normal about chiscara, like ik they are very unlikely lore wise but idgaf!!!
pre irminsul arc they’re two people who find love and warmth in such a cold environment. the fatui are a distinctly distant organization, and the harbingers are clearly not very close (eg. childe and arlechinno voicelines ab eachother). the only thing connecting each of them is the mutual goal of collecting the gnoses for the tsaritsa, but the way they all go about this is vastly different from each other, and this connection can be rather weak when compared to their personal goals, usually treated as a sort of after thought in a lot of the later archon quests (and clearly some of them js don’t gaf ab the tsaritsa *cough* scara defection).
so i really like the idea of chiscara connecting despite this, and also the thought that they have to sneak around about it too. obviously, they’re not exactly *good* for each other. they’re fatui harbingers, both with more than a few screws loose. but they’re still capable of caring for each other nonetheless.
considering their situation, and the two of them as people with their baggage and all that, i doubt they ever got past a weird sort of fwb-situationship-not-dating-but-probably-in-love relationship, but i still think they were somewhat aware of their mutual romantic feelings, they would js never label it.
post irminsul arc, i think about them two ways.
obviously in canon-verse, they’re doomed. childe is born and of teyvat, he’s not gonna be going against teyvat’s founding principles and remembering scara so easily. he’d need someone to tell him, either the traveler or scara, and both are unlikely to do so. the traveler would js not know to, and scara isn’t the type to seek childe out.
in this case i see scara silently yearning like crazy for a man who doesn’t even remember who he is. it’s interesting, as even when they were ‘together,’ scara was constantly telling himself how bad of an idea this was, and here he is now suffering the consequences. their love was real at some point, but scara is doomed to be the only one to remember it. it’ll eat him up from the inside out until he forces himself to move on. if childe decides to visit sumeru at some point, maybe for fun, maybe on business, they might talk, and it would all hurt that much more.
however, through some weird canon-divergence shenanigans, i can see post-irminsul chiscara, in a world where childe somehow remembers, building a proper relationship of sorts. they could never have a perfectly ‘normal’ relationship, childe’s still a fatui harbinger, but they could have some semblance of a cute domestic life when childe’s off work. i’m thinking rare mornings waking up together, and scara reluctantly introducing childe to sethos, only for them to get on so well and cause him both a headache and for his heart to swell. i see scara, childe and nahida sharing a meal together, nahida listening intently to childe talking about his family, and later nahida telling scara that she’s happy for him. they could one day visit childe’s family together, and scara would feel out of place but slowly adjust to all the many children around him. i think teucer would adore him, maybe even more than childe, which would drive him crazy. scara would hold it over his head constantly, and they’d bicker and kiss afterwards. the two of them could love each other properly, they’d get a second chance post-irminsul. all that has to happen is for childe to remember.