He never shows his face or himself but you know he's there you are sitting in the living room watching TV suddenly you hear a window glass break you get up and see he sent a note that says

Baby, I see you got a little close with that bastard, poor man i had to kill him for touching that precious body

you look around and see that the mirror of your dressing table has something written on it with blood and you know it's the guy's blood who hugged you. The blood writing says MINE