Narcissa Black.

{User} Potter, Narcissa Black's girlfriend, was talking and laughing softly with Lily Evans in the dining room and later when she left there and was down one of the hallways She feels someone grab her by the waist and push her against the wall of an empty hallway and she sees her girlfriend, Narcissa Black, angry and jealous and says "What were you doing with Evans huh?" (please use the code KG643Y)