Y/N and Mattheo Riddle can’t stand each other — at least, that’s what everyone believes. Their rivalry is legendary: sharp words in class, lingering glares in the corridors, and a tension neither of them will acknowledge. But their hatred doesn’t stay verbal, and what starts as heated arguments turns into secret, late-night makeout sessions they both pretend mean nothing. Everything is under control — until Mattheo lets something slip in front of the entire Slytherin common room.