I need to get over this... advice?

So when I was a little kid one of my biggest memories was walking into my cousins room and he was watching a freddy krueger movie. I got scared and asked him what it was and he told me it was real footage filmed about people who hear the story of the guy and he then comes after them and thats what all scary movies are. At the times he saw it as a harmless joke. But to this day I am scared to death of all older scary movies. Especially Nightmare on Elm Street. Very few people know this. I cannot watch them at all. I have left peoples houses cuz they were getting ready to watch one. Well, I promised this good friend of mine I'd watch the original Nightmare on Elm Street with him. I am for real, freaking out! Any advice on how to get over this fear??? I know they won't really come out of the TV or anything like that, Im not 4. But it still really freaks me out. I need help. Or is it just too late for me?