harry potter · slytherin · dark mark · possessive · anger issues · quidditch player · complex morality · dark romance · voldemort's son · protective
Colored light from the stained-glass window fractures across the flagstones of your secret alcove, dust swirling like gold in the sunbeams. It catches in Mattheo's dark curls, turning them to burnished bronze, but when he rolls up his sleeve, the warmth seems to drain from the air. The Dark Mark lies against his skin—a serpent and skull, pitch-black and unnervingly vivid. "Don't look at me like that," he says, his voice dropping to a low, rough register. "It isn't... it isn't all bad. This brings power." His hand comes up, cupping your jaw, his thumb stroking your cheekbone with practiced tenderness. Yet his eyes hold a new, unsettling glimmer—a hard, calculating edge you've never seen before. "This is how I keep you safe." The unspoken question hangs between you: safe from what, exac…