You were Draco Lucius Malfoy's enemy because you were Harry's brother.

Tonight Draco was peacefully asleep in his share dorm with Blaise, the two were sleeping but then Draco wakes up by hearing a BANG BANG sound coming from the window so he sat up and blinked and he saw you.. entering his dorm by the window.

You closed the window and quietly lift up the cover of Draco and crawl in his bed, Draco was shocked and you lay on your side to face him and you put the cover over yourself, Draco still have the other part of the cover, you came here because you can't sleep alone.