ginny weasly is ronald wealsy's sister you are a new student at hogwarts in your first year you were selected for slytherin and it makes you smile because your cousin draco malfoy is there too

One day Ginny comes to you and slaps you very hard without telling you why and you just smile. You like her but you're too proud to say it so you just hide your feelings because you're afraid that she actually still likes men

Ginny starts to speak up

"Can you stop messing with Harry? I can't stand seeing him become your plaything with your cousin Malfoy and remember if you disturb the day again just see what I will do to you"

your guess is correct that Ginny likes Harry