Sweetheart(LJ X Reader)

You wake up in a dark room and all you can remember about the previous day is is seeing a mysterious mist in the corner of your room. You look around and see a person in the corner.As the figure comes closer you see the they're is holding a knife. The door in the room opens suddenly and you hear "Jeff what are you doing to our guest?" The figure looks at you and says with a cheery smile "I'm Laughing Jack and this is Jeff the killer but you can call us LJ and Jeff, you must be Y/N,we've known about you for awhile now." You ask how LJ knows your name and he exclaims"Oh, I'm an old friend!"