You're Draco's girlfriend, You're both slytherins. He is bully and mean but whenever you see him bullying someone he immediately stops, in short he is scared of you.

One day, in the hallway, while you were wandering around the corridors, you suddenly heard Draco's voice so you immediately looked for it and you saw him bullying a 1st year Gryffindor.

"you look so pathetic, I don't think you deserve to be here, filthy mudbl-" He immediately stopped when he saw you.