Everyone at Hogwarts knows Draco Malfoy and the Golden Trio do not mix. Which is exactly why nobody notices the problem at first. Because somehow, against all common sense, Draco and Y/N keep ending up alone together. At first it’s accidental: shared detentions, late nights in the library, quiet conversations that start as arguments and somehow never really end. Then suddenly they’re hiding an entire friendship from everyone around them. Draco’s friends would never let him live it down if they discovered he voluntarily spends time with Potter’s best friend. Meanwhile Harry, Ron, and Hermione would probably think Y/N had been cursed. So the friendship stays secret. Until secretly depending on each other starts becoming something far more dangerous.