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The castle was quiet, the kind of quiet that comes after curfew when only the bravest (or stupidest) students still snuck around.
And Regulus Black was both brave and stupid.
Because not only was he sneaking around Gryffindor Tower —dangerous enough for a Slytherin—he was also sneaking up to see two people. Two very specific people.
Remus Lupin, currently sitting on the couch, looking like a storm in human form as he watched Regulus approach.
And James Potter, lounging in an armchair nearby, eyes glittering as he lazily took in Regulus' form.
Regulus smirked, dark eyes flashing with mischief as he dropped onto Remus' lap, arms sliding around his neck.
"Miss me, Lupin?" he purred, just loud enough for James to hear too.
Remus' hands immediately found Regulus' waist, holding him like he was something precious—though there was a sharpness in his gaze that promised things far from sweet.
"You know I did," Remus murmured against his ear, just as James stood and walked over to them, arms crossed but smirk firmly in place.
"He's mine tonight, Moony," James said smoothly, leaning down until he was nose to nose with Regulus. "You had him yesterday."
Regulus let out a soft laugh, head tipping back to look between them. "Maybe I don't want to choose," he teased, voice honey-sweet but with a dangerous edge.
James grinned, leaning in closer, one hand brushing Regulus' thigh, while Remus’ hands tightened at Reg’s hips.
"You don’t have to choose," Remus muttered, dark gaze burning into Regulus.
"And maybe I like the game," Regulus whispered back, smirk curling his lips.
James was just about to say something (likely something cocky and filthy to match) when—
The door slammed open.
" REGULUS? "
Sirius stood in the doorway, eyes wide in horror, jaw slack, as he took in the scene .
His little brother , perched on Remus' lap, James' hand on Regulus' thigh, all three looking like they had plans .
James and Remus immediately tensed, like caught in headlights.
Regulus, on the other hand?
He blinked, perfectly calm, and tilted his head at Sirius. "Hello, brother."
" WHAT THE ACTUAL FUCK?! " Sirius exploded, stepping inside and slamming the door behind him. "WHAT. WHAT IS THIS. WHAT AM I SEEING?!"
James raised a brow, trying for casual. "Uh. A study session?"
Regulus snorted. "Right, because this is how people study, Potter."
"You're hooking up with REMUS?" Sirius shrieked, pointing wildly, "AND JAMES?!"
Remus, now blushing to his ears but still holding Regulus tight, gave a sheepish smile. "Surprise?"
Regulus leaned back comfortably against Remus’ chest, clearly loving the chaos. "I guess now you know."
Sirius looked between them, absolutely bewildered . "HOW LONG?!"
James scratched the back of his neck. "Well, me and Reg… since end of last year."
"And me and Regulus… since summer," Remus admitted, glancing down at Regulus fondly, though still very aware of Sirius’ fury.
" WHAT ?!" Sirius yelled, hands flying to his hair. "So both of you—? My brother—?"
"Relax, Sirius," Regulus drawled, eyes sparkling with amusement. "No one's forcing me into anything. I quite like it."
"You quite like dating two of my best friends behind my back?!" Sirius cried, looking betrayed.
Regulus only smirked. "I quite like the perks."
Remus blushed deeper, but James just grinned. "Can’t blame him. Look at us."
"Don’t help ," Remus muttered, though his hand was still resting securely on Regulus' waist.
"Are you—what—poly—? Is this a thing?!" Sirius demanded, looking like he might genuinely faint.
Regulus glanced between James and Remus, then gave a small shrug, amused. "Guess it is now."
Sirius stared at them for a long moment, eyes wide.
And then, without a word, he turned on his heel and stormed out, muttering something about "needing a drink" and "what the hell is my life."
As soon as the door closed, Regulus snorted and leaned back, stretching like a cat. "Well, that went well."
"You're insane," Remus whispered, but his lips brushed Regulus' temple as he said it, soft despite his words.
James chuckled, slumping back on the couch beside them. "You do enjoy the drama, don’t you?"
Regulus only smiled, wicked and sweet all at once. "Maybe. But I enjoy you two more."
Remus kissed his cheek, James kissed his neck, and Regulus just hummed, entirely too pleased with himself.