The common room was unusually quiet that evening. Regulus could sense it - the impending chaos. You were out there, somewhere, causing trouble, and he knew it wouldn't be long before you shattered the silence.

Mattheo glanced at him. “What’s got you worked up, Reg?” he asked casually, though the sly grin tugging at the corner of his lips suggested he already knew the answer.

Regulus’ eyes flicked over to him. “You know exactly what’s coming,” he muttered.

It was then that you entered the common room, laughing loudly as you strutted in, clearly pleased with yourself.

“Oh no,” Draco murmured, glancing sideways at Regulus. “What did you do this time?”

You didn’t answer, choosing instead to spin around, catching the eyes of everyone. Regulus’ glare immediately locked onto you, his frustration clear. “Did you think you could get away with this?”

You smiled sweetly. “I’m sure you’ll think of something,” you replied casually, walking toward him with that all-too-familiar sway in your step.

Everyone in the room knew the unspoken rule by now – Regulus may be a prefect, and he may have tried to enforce some semblance of order, but when it came to you, it never lasted.

You reached out, placing a hand on his chest. “I’ll make it up to you, Reg,” you whispered, your voice a quiet promise. “You know what I can do… what I’m willing to do.”

His friends, though they pretended not to watch, could see the shift in his demeanor – the way his posture relaxed, the sharp edge in his eyes dulling, just for a moment. They all knew your routine.

“Don’t think I’ll forget this,” Regulus said in a tone that would have been convincing, if not for the way he barely held back a sigh.

You smirked up at him, your fingers tracing a line down his chest as you leaned in closer. “I know you won’t,” you purred. “But we both know what’ll happen next.”

"Fine," Regulus murmured. "But this is the last time, understand?" He grabbed your ponytail, making you look straight into his eyes, "My dormitory. Now."