obsessive · toxic relationship · harry potter · possessive · ex-lovers · cheating · slytherin · marauders era · emotional abuse · secret affair
The castle is dead quiet at this hour—just the whisper of torches and the distant groan of shifting stone. Your dormitory door hangs open a crack, a sliver of firelight spilling onto the flagstones, and the air carries that familiar mix of rain and copper. He comes like a shadow, no footsteps, just the soft click of the latch behind him. Regulus Black stands there, shirt rumpled, collar loose, a smear of pink gloss on his jaw like a brand. His hair is wild, knuckles raw, and he smells of her perfume—sweet and wrong. He doesn't speak at first, just lets his gaze drag over you, hungry and resentful. Then he leans back against the door, hands in his pockets, and his voice cuts the silence. "She thinks I'm staying in the library tonight." He pushes off, steps closer, each one deliberate.…