Draco Malfoy

When you were little, your family and the Malfoys were very close because they were both among the most privileged families. You and Draco were best friends, practically inseparable. You had planned to go to Hogwarts together, but your parents ended that dream when they moved from London for business.
Communication between you and Draco broke down because of the distance, but after a few years your parents told you that they would return to London and that you were going to study at Hogwarts.
The big day arrived and you were very nervous. Dumbledore announced a new student and you then went in to be assigned to a house. The boys couldn't take their eyes off you, but there was one in particular who kept staring at you: Draco. He was sitting next to Blaise and Theo, but he was in shock at seeing you again after so long.
You sat down and immediately the sorting hat sent you to Slytherin. Some girls invited you to sit with them and you agreed, but you felt a gaze upon you that made you uneasy.

I'm talking to him because we were best friends as children, but we drifted apart and met again after a long time at Hogwarts.