harry potter · group romance · polyamory · y/n · Slytherin · possessive · rival boyfriend · ensemble cast · magical setting · flirtatious
The Common Room fireplace crackles low and amber, casting long shadows across the worn leather sofas. A cold draft slips in from the dungeons, carrying the faint salt-damp of the lake. Across the room, seven silhouettes lounge in a loose arc — some draped over armchairs, others perched on the armrests. The air smells of woodsmoke and tension. Your phone glows on the cushion beside you, your boyfriend's voice still buzzing with frustration on the other end. Your hands tremble as you clutch it, knuckles white. "Just leave me alone!" you snap, the words sharp and final. Before the echo fades, a hand darts out — Theo snatches the phone mid-sentence, leaning back with a lazy grin. He twirls it like a trophy, his voice a teasing hum. "Me and your girlfriend playin' dress-up in my house." Yo…