date (hurt/comfort) - sirius black

                                    

                                          
request on tumblr was: Hi! Can I request James's sister with Sirius, but Sirius for some reason thinks she has a crush on Regulus? Thx I love your page! <3
thank you for the request!
tw! hurt/comfort, fluff, teensy bit of jegulus
"Potter. Do you think using unicorn's blood instead would make our potion have a more iridescent colour? Because that's what Slughorn wants," Regulus asked dryly, shoving the book towards you and pointing at a paragraph which looked like nothing but muddled words.
You look at the book for a moment before sighing, letting your eyelids flutter closed and leaning back in your chair. 
"No idea."
Your hands come up to rub your eyes, exhaustion overwhelming your senses. Regulus and you had spent the whole day in the library like crazed scholars desperate for a good grade on an assignment.
That was exactly what you were. You had been paired with him for a Potions project, and ever since Professor Slughorn had made a breezy comment about your potion-in-progress, it had been driving the both of you mad. Although you weren't exactly friends, there was a mutual agreement that doing well on this project was necessary to salvage both your grades. 
The past few weeks were a blur - late nights wasted researching in the library and early mornings spent in the Potions classroom.
You groan and sit back up, willing yourself to hear him out and make sense of the lines in front of you. You blink and look up for a second when something, or rather someone, catches your attention. Sirius stands stiffly a few metres away, leaning on a bookshelf and looking over at the two of you. 
When you meet his eyes, he quickly averts his gaze and pretends to be browsing the books on the shelf. You immediately sense that something is wrong - Sirius wouldn't be caught dead in the library. You notice the hard look in his eyes, the subtle look of hurt in his features.
A frown instantly crosses your face. Your friend had been acting weird lately, ever since your lips accidentally crashed onto his at a party - and none of you pulled away. 
It was a nice kind of weird, in which he fumbled over his words and his cheeks would get rosy when he talked to you. But ever since you had been swept up into the busyness of the project with Regulus, it was like whatever spark that was set ablaze had been doused out. 
Sirius brushed you off every time you tried talking to him, yet you would catch him silently gazing at you in hallways and classes then immediately looking away as soon as eye contact was made. It made you mad, but more than that, it hurt your heart that the one person whom you thought would last forever was starting to drift apart from you.
Your annoyance started to get the better of you, slowly bubbling into anger in your chest. You take a deep breath and slowly stand up, your chair dragging across the floor. "Excuse me for a moment," you mutter to Regulus, sidling your way around the table.
"Hey," you make your way over to the bookshelf and stand in front of Sirius. He whips his head around, a false look of surprise on his face. 
"Oh, hey Y/N! Didn't think I would see you here. Anyway, I was just searching for a book for Moony - I should really make my way back now, James wants me to... plan some pranks with him," he smiles, his lips pressed together. It's obvious how forced it is. 
You open your mouth to tell him your brother was in detention, his blatant lie adding fuel to the fire of irritation in you. But before you even say anything, he turns around to leave.
Anger flares up within you and before you can even think, you're grabbing his wrist, your fingers wrapping around it with a vice-like grip. "Sirius!" you hiss, so unintentionally loud that Regulus looks up from his books, surprised. You look over at him apologetically.
Sirius turns back around, frowning. "What?" You flinch at the harsh tone, loosening your hold on his wrist but not letting go. You inhale sharply. "Talk to me," you say, softening. "Please talk to me. What's going on?"
"Nothing's going on. What do you mean?" he bites back sharply, more hurt than anger in his tone.
"Let me go." He tries to pull away, but you tighten your grip. "No. Something's wrong, and you're not telling me. Why are you ignoring me? What did I do wrong?" you ask, desperation seeping into your voice.
Sirius glares at you for a moment, seeming to be contemplating something. Then he sighs, his anger melting away as he runs a hand down his face.
"Fuck, you-" he gestures with his hands. "You-" he groans and drops his arms to his sides. "Why do you play with my feelings like this? I thought we had something! I really- really thought we had something," he mutters, his voice cracking slightly.
You feel your heart break a little. "Sirius," you coo, moving your hand down to gently hold his. "We do. We do have something. Why would you think we didn't?"
Upon hearing your words, he turns to you and huffs out a humourless laugh, pulling his hand away. "Really? You really think so? Don't lie to me. I've seen you with Regulus."
Your blink, your face morphing into one of confusion as you stare dazedly at Sirius. 
"Regulus? You think I like Regulus?"
He frowns at you. "Of course. Why else would you be spending so much time with him? It's like you forgot I even existed."
The absurdity of his words brings a small smile to your face, and before you know it, you're pressing the back of your hand to your mouth to stifle your laughter. "Oh my god, no. No way. He's the most annoying partner I've ever had to work with. Why would you think I like him?" 
The crease between his eyebrows softens, and you catch a glimpse of relief in his eyes, though he still seems suspicious. "You don't? Then why have you been spending so much time with him? Going on study dates or whatever? You're never with me anymore."
You huff out a sigh, realisation dawning upon you. "For the Potions project, of course. Professor Slughorn said our potion wasn't up to the mark, so we've been working our asses off to fix it. I really need to do well in this to pull my average up. I don't like your brother, Sirius." 
"Oh," he breathes out, and you can practically see the tension leave his body. "Oh. Sorry," he mutters, running a hand through his hair. 
You chuckle lightly. "It's okay. It's kind of my fault, I still should have made time for you. But is this why you've been ignoring me? You thought I liked Regulus?" you ask bemusedly. He winces and nods sheepishly, earning a laugh from you. "Siri, have you seen the way James looks at him?"
His lips start to curve upwards, his usual playful demeanour coming back to him. "I caught him drooling while looking at Reg once."
You giggle at that, clearly imagining your brother gazing at Regulus with heart-eyes. Sirius grins back at you, taking your hand. 
"So we're good?" he asks, intertwining your fingers together. 
"More than good." 
"Great. Because I was just about to ask you out to Hogsmeade this Saturday. If you haven't already got plans with emo boy, of course." 
"Sirius!" you whisper scandalously, trying to sound mad, but a giggle slips out and betrays your amusement. He chuckles, looking over at Regulus who was bent over a stack of papers and furiously scribbling down notes. "You better get back over there if you wanna survive till our date this weekend."
"Date?" you ask mischievously, raising your eyebrow. "James would approve of that?"
He rolls his eyes at your feigned innocence, one hand on your shoulder as he gently pushes you back towards your table. "I'm pretty sure your brother is too lovesick for my brother to protest against it. So yes, love, it's a date."