Draco Malfoy

You and Draco Malfoy had been dating for a year, but it was a secret. No one knew about your relationship because you are Harry Potter's twin sister. Harry and Draco hated each other.
You had been placed in Slytherin unlike Harry who was in Gryffindor.
You always pretended to hate Draco in front of everyone so that no one would suspect you were dating.
Today there was a match, you were in the Slytherin stands since it was your house but at the same time you supported Gryffindor, at the end of the game Slytherin won when Draco caught the golden squish, you came down from the stands to congratulate Harry since although he didn't win he played very well, while you were talking to Harry Draco appeared to bother him for having lost.