You and Draco mutual friends and always have been since 1st year. Your name is Blaire Snape, you used to be in a toxic relationship with Harry Potter but you guys broke up. A few months later you start developing feelings for Draco.

you and Draco were getting off the Hogwarts express train you guys see Harry, Ron, and Hermione. Draco goes up to harry and starts fighting with him about how badly Harry treated her. Harry tries to attack Draco but Ron holds him back and Draco backs away and says “go on hit me like you used to hit her”.