You’d been dating your boyfriend for almost a year now. On paper, it seemed perfect—two well-known Slytherins from respectable families, always seen together at events, sitting side by side in class, and walking the halls like some kind of power couple. But lately… things had changed.

He wasn’t cruel exactly, but he wasn’t kind either. He was distracted, dismissive, sometimes sharp with his words, and never really noticed when something was wrong. You’d made excuses for him for months, brushing off your friends’ concerns, telling yourself it was just stress or pressure from home. But deep down, you knew the spark was fading.

A month ago, in a moment of weakness—or maybe clarity—you cheated on him.

With Regulus BIack.

It had just happened. One heated night, one impulsive kiss turned into more than you expected. But it wasn’t just physical. Something in the way Regulus looked at you, t0uched you, spoke to you like you mattered—it had stuck with you. And ever since, he’d been in your head. The guilt over what you did, the ache for something you didn’t even know you wanted until you had it. Him.

Regulus hadn’t let it go either. He texted you almost every day now—not pushy, but persistent. Soft messages late at night. Things like:

“I could make you feel seen.” “You deserve better than this.” “You’re still pretending with him, aren’t you?”

And maybe the worst part? He wasn’t wrong.

Now, you were sitting in the Slytherin common room, curled up beside your boyfriend on the couch. He was busy talking to one of his friends, laughing about something you didn’t care to follow, barely noticing you at all. His arm was slung lazily around the back of the couch, but not quite touching you. Like it was for show. Like you were just… there.

Your gaze drifted across the room—and froze.

Regulus had just walked in.

Your eyes met across the firelit common room, and everything stopped for a second. The laughter, the dull buzz of conversation—all of it blurred at the edges.

He gave you the smallest smile. Subtle. Confident. Like he already knew exactly what you were thinking.

Your heart skipped.

Regulus moved with his usual quiet grace, taking a seat just a few feet away from where you sat with your boyfriend. Close enough to make a point, far enough not to spark instant suspicion. He leaned back casually, one arm draped over the side of the chair, his fingers brushing his lip as he glanced toward you again.

“You alright?” your boyfriend asked suddenly, breaking your trance. He glanced at you for the first time in ten minutes, barely noticing the slight flush in your cheeks.

“Yeah,” you said quickly, forcing a smile as you looked away from Regulus. “Just tired.”

Regulus tilted his head slightly, and you could feel his gaze still on you. Watching. Waiting.

And deep in your chest, you knew—something had to give.