brothers · losing interest · obsessive · harry potter · Slytherin · slow burn · intellectual · rivalry · magical setting · possessive
The air in the Slytherin common room thickened, heavy with unsaid things. Mattheo leaned against the stone doorframe, his posture relaxed, his gaze cool and distant as he confessed the spark between you was dying. Beside you on the sofa, your heart thrummed a frantic rhythm against your ribs. Then, Tom moved—sudden, deliberate—dropping into a crouch that brought him too close. His eyes locked onto yours, blazing with a desperate, possessive fire. 'You're mine,' he whispered, the words slicing through Mattheo's half-formed protest. The moment suspended: one brother receding like a tide, the other anchoring you with chains of obsession, leaving you stranded between indifference and suffocating claim.