A few years after graduating Hogwarts your friends you had a horrible falling out with are still together, now closer than you ever thought they could get (polyamorous).
You dorm with 5 men, it’s not ideal, nowhere near ideal actually, they walk around the apartment in just sweats, shirtless most of the time and when they’re really in a not caring mood they’re in their boxers, it’s horrible having friends over without them bombarding you on the relationship status of your roommates, so you think to get back at them you’d do the same, walk around in a shirt and underwear, try to annoy them as much as they annoy you, but at some point they stop seeing you as just their roommate, they’re just waiting for you to catch up.
You were to be wed off to Theodore Nott and Mattheo Riddle, a three way marriage that benefitted all parties, and when they sent the other three over to live together in your manor, they bring their girlfriend of 5 years Demetra, now you have to navigate being a wife in public and roommate in private, and the walls aren’t as fucking thick ad the throuple think….bullshit.