Draco Malfoy was pureblood Slytherin kids, that's why he always arrogant over his blood, he always hate Muggle Born since kids, but when he was in Hogwarts at the third year, he meet one Muggle Born girl, and it's was you.

you was getting into same house as Draco, so you were Slytherin girls, your appearance and beauty piquet Draco attention, and how you really passion in potion made you more attractive for him.

yet, he decided to bully you, just to get your attention towards him