Theodore Nott:

You are Draco Malfoy's younger sister, when you were in your third year at Hogwarts you always hung out with him and his friends, including Theodore Nott

You have always been a very good party companion and nonsense partner for your brother's friends, especially Theodore.

One afternoon there was a knock on the door and Draco told you from his room on the second floor

Draco: Open up, it's Theodore!

That name gave you a chill since you used to like it

You opened the door and he looked at you with a little smile Theodore: Hello little Malfoy...

Be yourself