Severus, who sneaks a look at himself whenever he walks by a mirror. Severus, who thinks no one notices him shrink in on himself. Sirius, who does notice. Sirius, who now feels guilty, who has to deal with the fact that he's part of the reason for this.
Sirius, who traces over Severus' face with his thumb. Severus, who shifts away before he can get to his nose.
Severus, who only wears long sleeves and pants, who refuses to show even a little skin after SWM. Sirius, who feels his eyes sting every time he notices Severus put back clothes with short sleeves. Sirius, who feels his shoulders sag whenever it's hot out, who sees Severus suffering in the heat.
Severus who washes his hair twice a day, leaving his skin dry and damaged, same with his hair. Sirius, who has to tell him how bad that is for him, who has to swallow past the lump in his throat.
Severus, who hates crying. Severus, who burrows his head in his pillows and blankets so he won't be heard. Severus, "Sorry for snivelling." Sirius, who feels his stomach drop every time. Sirius, who holds him close, even though Severus refuses to turn around.
Sirius, who is cursed with having to watch Severus suffer because of him, even after all these years.
• Sirius tends to talk more than Severus, but Severus is the one to go on elaborate rants when he is frustrated, and Sirius absolutely loves every one of them, because no one else comes up with such unique ways to call someone stupid like his partner (and it's nice to not be the one called stupid, while actually joining in a "we can judge all these people together" way).
• Sirius is the one with the loud barking laughter, Severus is the one with the silent laughter (his shoulders may jump and eyes get teary). It's hard to get an actual audible laughter from him, but Sirius loves every moment he manages to do it.
• When Sirius finds out Severus needs something, he loves to get it for him, but Severus is often too prideful to accept gifts all the time just like that (he thinks he can get it all himself and doesn't like to feel like he owes someone something). So, Sirius plays a game of just putting it somewhere for Severus to find and then acting like he has no idea where it came from (Severus is irritated initially, but starts playing into it with time, because, well, he needs these things, actually).
• Their usual arguments turn into banter with time, and they learn to make it less heated and vicious, although they still have a bit of a need to "outdo" each other which may be a bit too strong.
• Sirius stops smoking and mostly stops drinking for Severus, because the latter can't stand both after his traumatic chilhood. But Severus doesn't stop him from smoking or drinking on the day of Potters' death and sometimes even accompanies Sirius in a "self-punishment" kind of way (Sirius isn't a fan of the "self-punishment" idea for him, but it's useless to argue and it's kinda funny to see can-do-anything-perfectly Severus Snape coughing from smoke and wincing from alcohol's taste).
• Severus learns to be less vicious and venomous to Sirius in their arguments/banter. Apparently, it all works out better when he doesn't look for every button to push and doesn't remind Sirius of his mother;
• Severus actually likes dogs and loves Sirius' dog form. He also gets more talkative with Sirius as Padfoot, and if they go somewhere like this he turns into one of the people others mention as "I heard that owner telling this weird thing to their dog". Sometime human!Sirius gets jealous of dog!Sirius, but he also knows that dog!Sirius is the best option when he needs to beg for forgiveness.
• They have a quite eclectic music collection, and Sirius was very surprised to get a lot of niche knowledge from Severus, who had spent too many summers listening to wild muggle teens around. Sometimes Sirius drags Severus into dancing, usually to the weirdest and most unfitting song possible.
• Sirius likes to help Severus with potions, when the latter is too busy to give him attention, but Sirius still need some. Severus has to begrudgingly accept that Sirius is actually smart enough to be really useful.
Everyone being convinced that when Sirius and Severus get together, it's toxic, but it's just the most domestic relationship ever.
Like, Severus seems a bit upset. Everyone— The marauders and Lily— are gripping their seats. Sirius hands him a blanket, his book, and sits next to him. They all let out a massive sigh of relief when Sirius kisses Severus' forehead, an arm wrapped around him.
They had an argument? Everyone is convinced that one of them is going to come out with bruises. Instead, Severus walks over, 'I'm sorry I overreacted.' 'It's alright, I understand now. I should've taken your feelings into account. We'll do better next time?' 'Mhm.' and everyone is just mind blown.
Maybe they invite people over for dinner. Everyone is super nervous, but they walk into music playing in the kitchen, Sirius dancing terribly, and Severus doubled over with laughter while the stove simmers.
Severus gets a cold, nothing major. Sirius is texting his friends, asking for food recipes for sick people, he's buying the best medicine, etc.
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I get the appeal of toxic Snirius, but I can't see them ever being toxic. They'd be too sickeningly in love with each other to hurt one another after they start dating.
Snirius except Sirius is trying to win Severus over in the stupidest ways. Just being absurdly down bad for him. While James' is chasing Lily, Sirius is actively chasing Severus. Literally.
He shows up to his house in the summer, luckily his Dad's away, singing a terrible love song with flowers.
Flying class, which I suspect is pretty similar to PE, he's claiming Severus to be on his team. The marauders are absolutely admonished by his sudden interest, but somehow supportive.
There's random love notes, flowers, gifts, etc.
Severus thinks this is all one big prank on him, one he's not gonna fall for and Sirius is literally so down bad for him.
Severus having an autistic meltdown and Sirius just standing there like this. 🧍
Like, Severus is screaming, throwing things, crying, he's a mess. Everything is too loud and too much, his clothes aren't right but it's not good if they're off, his hair is touching his face weirdly, etc. Throughout all the shouting and flailing Sirius is just like, in the corner.
YES! I have so many, they've taken over my prefrontal cortex.
General hcs/ Takes places during adulthood-
Severus has so many weighted blankets, it's not even funny. It's never enough. Sirius solved that. Now he just lays on him. Severus could be relaxing in bed and Sirius just fucking divebombs him, kamikaze style.
Sirius randomly barks or meows from across the house. Severus randomly screams. Severus honestly wasn't super surprised about the animal noises, but Sirius nearly passed away when he heard Severus scream bloody murder while chopping an onion.
Everyone thinks they'd be toxic, but they're genuinely so domestic. Lily and Lucius tell him that if things go south, Severus always has a place to stay with them. They're all gripping their seats when they're invited over for dinner, nearly vomiting or something. They walk in to see Sirius dancing horribly to stereotypical white girl music and Severus doubled over with laughter.
Severus plays a lot of instruments. Most notably, the electric guitar. Sirius nearly blacked out when he found out, followed by becoming absolutely feral.
Sirius and Severus jokes about each other's terrible life. "Jeez, Severus, this is why your father whipped you." "Merlin, Black, This is why your mother disowned you."
Backtracking off of the last one, James thought it'd be okay to poke fun. He's not going to make that mistake again. He's still hesitant to mention Severus at all.
Their initial wage gap comes into focus a lot. Sirius will watch in horror as Severus fills soap bottles with some water and shake it. Severus will watch in horror as Sirius spends a couple hundred gallons because he felt like it.
Sirius has a bunch of silly nicknames for Severus. Princess, shnookums, Honey Bear, etc. Y'know, the overly sweet ones? Severus calls Sirius or Black, but if he's tired or feeling vulnerable, he'll call him 'Siri' or 'Ri'.
Severus doesn't really know how to respond to physical touch, and Sirius is really touchy. We even see that displayed, like how Sirius, after 12 years in Azkaban, practically pounces on Remus, or how he's hugging Harry, how he's so close to the ones he loves. Severus on the other hand seems to purposely distance himself from others. Sirius will practically force him to accept the fact that he's going to be hanging off of him, koala style. He'll hug him from behind, or he'll literally just grab his wrist and pull him into his lap. He'll jump in bed next to him and attack him with hugs and kisses, etc. Severus would never admit it, but his touch-starved-self adores it. He leans into every touch, almost unconsciously, visibly relaxes, etc.
Sirius bites him. He'll just be reading or brewing and Sirius bites his shoulder. He does, in fact, say 'om nom nom' while doing so.
Severus is the little spoon. Not because like, he chose that, but because he refused to cuddle, so now Sirius just hugs him like an angry teddy bear.
Severus doesn't talk about his interests often, but now, whenever he does, Sirius stared at him with wide eyes and giant smile. He really likes hearing him talk about anything he enjoys.
They made their own name when they got married. Sirius wasn't truly a black, and Severus wasn't a Snape.
Angsty, but before they died, they promised they'd die together. They knew that it was a possibility, but if they didn't make it out of the second war, they'd at least want to die with each other. That alone was an unfulfilled promise, so they each had necklaces or bracelets carrying around a lock of each other's hair, that way they died near a part of the other.
Severus has immaculate table manners and Sirius cannot tell the difference between a napkin and a table cloth.
Sirius, much like a dog, gets the zoomies. Severus jokes about taking him for a walk. It's not a joke anymore, they genuinely go on walks a lot.
School years!
Sirius had the mauraders try and hit on Severus with him. Like those giant promposals with all the friends holding up signs. Severus literally just ignored it.
Sirius always slipped him extra food because he 'needed to eat more.' well, he did, but that's not the point. He'd slip him some toast in transfiguration or slip him an apple in charms.
The marauders were quite surprised when they heard of him actually getting with Severus. "No shit, you actually managed to get him to date you!?!" "CONGRATULATIONS, MAN!" "He's.. dating you now? Does he know this? Did he agree to this, Siri?"
Sirius would sneak into the dorms as a dog at night, just to check on him. (Creepy, but he's done worse, let's be honest with ourselves here.) Whenever he'd have nightmares or be up late, Sirius would stay in dog form and hang out.
Snirius w/ a healthy helping of Severitus.
Severus is the Strict Parent and Sirius is the Fun Parent.
Sirius totally thought they'd kill each other within five minutes, but they actually just had a calm conversation. Meanwhile, Sirius is sweating balls.
"Okay, I know you two don't get along, but he doesn't really have anywhere safe to go—" "Oh HELL NO!" "Listen, I know you two don't—" "NO CHILD OF LILY'S— WHY ARE YOU EVEN HERE, GO GET HIM!"
Sirius and Harry sneak out together, only to get lectured when they get back.
"THAT DAMNED MUTT!" "DAD, RUN, YOU'RE GOING TO GET IN TROUBLE, PA'S MAD!" "Shit!"
Harry gives Severus a heart attack nearly everyday. It's not necessarily like, intentionally. He'll just say something super concerning. "Oh, yeah, and then I fought the basilisk!" "You what!?" Visibly paler. Sirius just watched from the corner like a scared child.
"brat, mutt," said affectionately. "Love, kiddo," said threateningly.
Sorry this took a while to answer, I just wanted to provide as many as I could think of!
"Snirius would be so Toxic—" Sirius kisses his hand obnoxiously. They bicker like an old married couple, but they love like one too, and it's all jokes. They're disgustingly in love with each other. They make cookies together and drink coffee in the morning. Sirius makes Severus laugh. They don't want to go to work because then they're separated, and they're often late because they held each other back. They spend their lunch breaks together, they send letters to each other during the day. They're not toxic, they're obsessed with each other.
Autistic!Severus x Sirius (who's constantly picking fights)
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Sirius: NO, DO YOU HAVE A FUCKING ISSUE? DO YOU HAVE A FUCKING—
Severus: Hey, I don't know if this is a bad time, but did you know that wizards used to dip their wands in olive oil before doing dark magic because they thought it would protect them. :)
Sirius: Oh, you're fine, that's very cool.
Random dude:...???
Severus: :)
--
Severus: SIRIUS, TURN THE LIGHT OFF UP STAIRS!
Sirius: WHY?
Severus: IT'S TOO LOUD!
Sirius: WE'RE LITERALLY SHOUTING!
Severus: YEAH, BUT THIS IS GOOD LOUD AND THAT'S BAD LOUD!
Sirius: ??
--
Someone: Uhm.. what is he doing?
Sirius: He's spinning, now—
Someone: But like, why? Isn't it kind of r—
Sirius: YOU KNOW WHAT, BRENDA? I DON'T RECALL ASKING—
