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He didn't know how they had ended up like this.
But all Remus Lupin could think about was Sirius Black. Sirius Black's soft lips against his, Sirius Black's slender, beautiful hands clinging to his shoulders for support, Sirius Black's narrow hips pressing lustfully against his. It all came down to Sirius Black in his arms, melting like butter with every kiss he gave him, with every caress he granted him.
“Moony, Moony...” Sirius sang, with that elegant accent characteristic of the most distinguished pureblood families.
And, oh, Remus was so weak, so, so weak when it came to Sirius. Even more so when he had him like this, gasping for air, his cheeks as white as porcelain tinged with a soft crimson blush and his lips swollen and shiny after so many kisses.
Beautiful, beautiful, beautiful, he thought with delight, as he pushed Sirius toward his bed, trying not to trip over the mess on the floor of the Marauders' room.
Soon, Sirius let himself fall onto Remus's bed, his body bouncing gently on the mattress as he let out an amused chuckle, his long, ebony-black hair tousled and falling over his eyes like a silky curtain.
“Oww, be careful, Moony! You're going to break me! I'm delicate, you know?” Sirius laughed, his beautiful gray eyes looking at him mischievously.
And Remus knew he was lying, that he was just teasing him, maybe to lighten the sexually charged atmosphere, or maybe because he said more stupid things in those situations due to nerves, but whatever his intention, Remus knew it was a lie, because Sirius Black was strong, one of the most skilled wizards he had ever met. Certainly, he never imagined he would ever hear even a hint of weakness from Sirius Black's own mouth.
But the mere idea turned him on like never before.
Imagine himself, a simple half-blood and werewolf, ruining the perfect and elegant heir of Britain's most important pure-blood family with his simple kisses and caresses was... inexplicable.
Maybe it was the wolf inside him that made him so animalistic, but he couldn't stop after Sirius's words. His hands quickly wrapped around Sirius's slender, white wrists—so beautiful, so delicate, so perfect—to pin them above his head and against the mattress, while he straddled his lap, pressing their bodies together.
Sirius moaned as he felt him on top of him and quickly stretched his neck, eager for their mouths to meet again. Remus indulged him – because he could never deny that spoiled brat anything – and kissed him hard, sliding his tongue into his warm, wet mouth, moaning softly as he tasted the sweet flavor of butterbeer on the tip of Sirius's pompous tongue when he sucked it delicately.
Sirius arched his slender body at the stimulation, his shirt rising with the movement and revealing the pale skin of his narrow hips, causing Remus's mouth to salivate when he saw it as they separated.
He wanted so badly to put his tongue there and lick, suck, and bite the delicate bone of his hip until he left marks that would take days to disappear. And that's what he did.
“Oh, Moony...” Sirius sighed, burying his long, elegant fingers in Remus's brown hair.
Remus let out a low sound from deep in his throat, which could maybe be described as a growl but actually sounded more animalistic and primitive, as his lips sucked on the sensitive skin and left small red marks in their wake, marking Sirius's body as if it were his, as if it belonged to him.
Was it really?
He didn't know and didn't want to think about it, but he became more aware of what was happening between them when he heard Sirius whisper a soundproofing spell in the room, followed by a spell to lock the front door.
He had to take a deep breath to steady his heartbeat before looking up to see Sirius's face, still positioned between his legs.
“Padfoot, are you... sure?” he murmured uncertainly, cautiously removing his hands from Sirius's body.
It was then that he realized how quickly everything had escalated in such a short time. Less than half an hour ago, everything had been normal. They had been celebrating Gryffindor's victory over Slytherin in the Quidditch finals, sharing a few drinks of butterbeer and firewhiskey in the common room with the rest of their classmates, who were dancing to the songs playing on the vinyl record player. He and Sirius had sung one of their favorite David Bowie songs at the top of their lungs while hugging James' shoulders, the three of them swaying clumsily from side to side thanks to the alcohol in their veins.
A second later, Sirius had stumbled in his drunkenness and fallen into Remus's arms, bringing them closer than they had ever been before despite all their years of friendship.
Then they had kissed awkwardly, hidden in the darkness that a corner of the common room had provided. They had been innocent, timid kisses, just two drunk guys trying to explore unfamiliar lips they had never imagined kissing.
And so there they were now, both with racing hearts —Remus could easily hear Sirius's heartbeat thanks to his keen hearing and was relieved to know he wasn't the only one excited— and swollen lips after the rough session of kissing. How did they go from one extreme to the other? Remus couldn't remember; it had all been so fast and so intense that his mind felt fuzzy and confused.
“Pff, Moony, of course I'm sure,” Sirius snorted, trying to sound cool, but the blush on his cheeks and the slight tremor in his hands betrayed his nervousness.
“But, you know, we're... We're friends! We've been friends since we were eleven, and, uh, we're part of the Marauders, and...”
“Hey, hey, hey, calm down,” Sirius cooed, supporting himself on one elbow to raise himself up a little, while his other hand went to Remus’s shirt to pull him closer.
Remus let himself be pulled until he was pressed against Sirius again, his elbows resting on either side of his head so as not to crush him, and their chests so close together that there was no way even air could pass between them.
“Yes, we're friends, we're the Marauders, we're Padfoot and Moony, that's never going to change, do you understand? Never,” Sirius assured him, raising one of his hands to Remus's cheek to caress it gently.
Remus felt his heart melt at those words, amazed by this version of Sirius Black. He never thought he would see him like this, so gentle and warm, with a look so intimate and sweet that it would melt the coldest heart, without a trace of his smug smiles or cocky demeanor.
Remus loved to think that he was the only one who saw this side of Sirius Black, the only one who had seen him like this because he was the only one Sirius trusted enough to let down his guard.
“But besides being friends, we're also this,” Sirius whispered, his hoarse, deep voice sending shivers down Remus' spine. “I love you as my best friend, Moony, but I also love you like this, I desire you like this,” he purred seductively, pushing his hips against Remus' so they could feel each other.
Oh, he thought with resolve, I understand. I finally understand. This was what he wanted, it was Sirius he wanted. It had always been Sirius, it wasn't just admiration and brotherly love, it was desire and yearning that he had never been able to name. How could he not have seen it before? It had always been there.
“You want it too, right, Moony? You want it as much as I do, don't you?” asked Sirius, looking at him with something like... eagerness?
“Yes,” he sighed, pressing his forehead against Sirius's, looking at him fondly. “I love you, Padfoot, I love you in every way, but especially like this,” and he pressed a kiss on Sirius's soft lips to confirm his words.
Sirius returned the kiss, deep and intense, with a desire that overwhelmed Remus for a second, but which he himself also felt burning from his core.
Everything became so wet. All lips, tongues, and teeth sucking and biting messily until they left a trail of shiny saliva on both reddened mouths. Moans rose, hoarse and provocative, sensual and extremely obscene sounds that would make anyone blush.
Thank Merlin that Sirius had cast a soundproofing spell on the room, because otherwise the whole of Gryffindor would now know what was going on in the Marauders' rooms.
Soon, both Remus's and Sirius's clothes disappeared until they were just a tangle of limbs, just a pair of naked bodies sprawled across the sheets of Lupin's bed.
Their bodies moved together, seeking to rub against each other, craving that delicious friction that filled them both with shivers. It was as if their bodies had synchronized, because if Remus pressed down to feel him, then Sirius pressed up as if chasing his heat, intensifying the touch of their feverish skin, rubbing against each other until the moans were almost impossible to contain and emerged from their throats to express their desire.
And Remus felt himself bursting, because Sirius felt so hard, so rigid against his own erection, and Remus could only growl against Sirius's collarbone as he pushed harder, thrusting wildly to make both erections rub together, feeling against his sensitive skin how long, thick, and wet Sirius was.
“Moony, I want you, I want you,” Sirius whimpered, arching his body beneath him and clinging to his hip to pull him closer, closer, closer.
“I do too, Pads,” Remus gasped, nibbling at Sirius’s neck, too mesmerized by the way he exposed his throat as he arched to contain his desire to mark him.
“No, Moony, I want you.” Sirius's voice broke, trembling and ending almost as a choked sound as he felt Remus's teeth sink into the flesh of his neck.
“You want me? Oh, well, then tell me, where do you want me, Sirius?” he asked, licking the irritated skin he had just bitten, that spot where Sirius's pulse throbbed and his blood roared louder.
“Everywhere, Remus, I just want to feel you.”
Remus growled at the request, because Sirius's voice came out as little more than a faint whisper, as if he needed it so badly that the air couldn't reach his lungs. And the wolf inside him growled too, eager to mark the man beneath him, wanting to prove that Sirius was his, his, his with a need so animalistic and primitive that Remus attributed it to the most basic instincts of the monster inside him.
He got so anxious that he didn't know where he got what he needed to start the act, he could only think properly when he had his fingers —well lubricated— pushing inside Sirius, touching his insides very carefully and gently while that warmth surrounded his digits. Remus sighed through his nose with his teeth clenched, pushing and pushing and pushing until his knuckles brushed against the smooth white skin of Sirius's buttocks, and oh Merlin, he really did have his fingers there, he really was touching Sirius like that.
Not even in his wildest dreams had he imagined having Sirius like this.
“Moony, Moony, Moony, you feel so good,” Sirius Black moaned hoarsely, pushing his trembling hips against Remus's hand.
And Remus could only kiss and bite Sirius' thighs, whispering against his skin how good he was and how good he felt, worshipping him as if he were a divine deity who had descended from heaven to lie in his bed.
Because that's what Sirius Black looked like at that moment: a divine deity. With his long, ink-black hair falling messily across the pillow and part of his shoulders, with his full, red, swollen lips opening to let out the most obscene sounds, with his flat, slightly toned chest —thanks to Quidditch training— rising and falling erratically to the rhythm of his rapid breathing, with his gray eyes so cloudy and shiny that they looked like a sky about to rain. With his exquisite and elegant existence, presenting himself all just for Remus.
Remus was so lucky.
When he replaced his fingers with his cock, pushing his hips to sink into Sirius's body, he felt as if magic was vibrating under his skin like a buzz. No spell they could ever teach him in class would ever compare to how magical it felt to become one with Sirius Black, because he was so tight, so perfect, so enchanting that his whole body was filled with shivers that made his skin tingle.
“You feel so good, Padfoot, so tight,” he growled with delight, his lips wandering over Sirius's sharp jawline.
“Moony...”
And then he began to thrust hard, listening to the growls and moans that escaped from Sirius's battered lips, indulging him every time he babbled incoherents more, more, Moony, more that were lost on Remus's lips, because they never stopped kissing, as if they needed to have their mouths together at all times.
He also allowed himself to run his hands over Sirius's body, touching and caressing every inch of skin within reach from their positions. His fingertips traced Sirius's soft, slender thighs until they reached his toned chest, where he squeezed the sensitive pink nipples with his fingers until he trembled like a leaf, wanting to memorize every curve, every mole, every groove, and every imperfection with his own touch.
Because he wanted to, because now he could and had to seize the opportunity.
He sank his fingers into Sirius's hip, thrusting hard as his kisses moved from his lips to his jaw and then down to Sirius's chest, allowing himself to drown in that skin and those arms, letting his senses lose themselves in the existence of Sirius Black, as beautiful and wonderful as he was.
His whole body was burning, but it burned even more where Sirius's hands touched and scratched him, clinging to him as if afraid that someone would separate them. And Remus couldn't feel more blissful, surrounded by Sirius from all sides, smelling his scent, tasting his skin until he could savor its flavor, listening to his melodious moans directly in his ear, touching every inch of his slender body, his senses so full of him that there was nothing else in his mind but Sirius Black.
Remus felt like he could live in that moment forever and never get bored.
“Sirius, Sirius, my Sirius,” he hummed softly under his breath, feeling like he couldn't breathe.
“Moony, oh, yes, yes, yes...”
Remus hugged Sirius tightly around the waist and let almost his entire body rest on Sirius's, continuing to move his hips at an almost frantic pace, while their chests pressed together so tightly that there was no space between them, almost as if Remus wanted their bodies to become one, as if he wanted to get under Sirius's skin until they merged and there was no way to pull him away. And Sirius seemed to want the same thing, for he had clung to his neck with both arms, so tightly that it made it a little difficult for Remus to breathe, while his legs were tangled around Remus's hips, pushing him against his body and giving him no chance to pull away, as if he didn't want Remus to leave his body, as if he wanted to feel him deeper.
From a distance, anyone who saw them would not be able to tell where one body began and the other ended, for they were a tangle of limbs clinging to each other that was difficult to figure out.
Then ecstasy peaked and Remus felt all his pleasure explode, cumming so hard as a guttural sound left his throat and his body vibrated, as intense as if he had put his hands inside a core of magic, pure and raw magic that ran from his head to the tips of his toes.
His mind filled with a satisfied haze as he heard the roar of blood in his ears, his heart pounding so hard that he felt all of Hogwarts could hear it.
“Moony...” Sirius's sigh brought him back to reality, pulling him away from that foggy state.
“Pads? Are you okay?” he asked, his voice slightly hoarse.
“Mhm, wonderful.”
Remus looked at his face again, noticing the slight curve at the corners of his lips that formed a full, satisfied smile. Carefully, he pulled away from him until the connection between their lower bodies was broken, but Sirius seemed to have no intention of letting him go, clinging to him even tighter.
“Did you manage to...? You know—” whispered Remus, not daring to finish the question.
Sirius looked at him in confusion for a long second, before bursting out laughing.
“Oh, Merlin, seriously, Moony? We just did it and you're still being shy!” he laughed, almost breathless. Remus just felt his face getting hotter and hotter with embarrassment.
“I was trying to be nice, you idiot!”
Sirius only laughed harder, causing Remus to get a little irritated by his lack of seriousness, so he tried to pull away from him.
“No, no, no...” Sirius wrapped his legs around his hips to keep him from leaving. “It's just that... you're adorable.”
Remus snorted and buried his face against the curve of Sirius's neck to hide his furious blush.
“But yes, Moony, I did manage to cum,” he whispered with a certain mischievous tone, as he caressed the scars on Remus's back with warm fingers.
Remus let out an embarrassed groan, but nodded imperceptibly.
“So, we...” Sirius began, his voice sounding a little strange.
“We're Moony and Padfoot, aren't we? That's never going to change,” Remus assured him, leaning over Sirius's body to press a kiss on his wet lips.
Sirius nodded, barely able to contain his smile. They both knew it: they were Marauders, they were full moon buddies, they were best friends, but they were also that—a passion that consumed and swept everything away, an explosion of magic that made them vibrate from their core.
They were everything. They loved each other like this and in every way possible.
And if someone had told Remus, five years earlier when he boarded the Hogwarts Express for the first time, that he would be sharing a bed and feelings with Sirius Black himself, he would have laughed, because the Sirius Black he first met at the age of eleven was so unattainable to him.
“I love you, Pads” he murmured, his long body curled up against Sirius's so he could rest his head on his pale chest.
“I love you too, Moony,” he replied, tightening his arms around Remus's shoulders.
They loved each other, that would never change.
And it didn't change, not even when war broke out, not even when their friends died, not even when Remus forced himself to hate a supposed traitor, not even when Sirius spent years suffering in Azkaban for a crime he didn't commit. It didn't change, it just remained on pause until they found each other again.
But they couldn't have known or even suspected that future, so young and immature as they were at the time, they just focused on living the wonder of their first love.
“Hey, Padfoot, Moony! Why's the door locked?! Unlock it! Peter wants to throw up!”