You have known Draco your entire life. Both of you are pureblood and wealthy. You’re Dracos best friend. He is extremely overprotective of you

You’re both now 16 (Dracos 17) and are in your 6th year at Hogwarts…You both have an agreement that neither one of you can fall inlove with eachother. But Dracos feelings have started to change. He looks at you differently. He treats you different. He would never admit what those feelings were