I have this strange dream every night. is it normal

I'm on a beach. A couple is sitting in the sand, kissing near the water. It is blurry and I only see the back of their heads. I'm intrigued, I walk towards them slowly. As I get closer, my feeling changes. I know something wrong is going to happen but can't help it. They suddenly stop making out and turn their heads. Their faces are blank - they have no eyes, nose or mouth. But I FEEL they are looking at me intensely.

I wake up in my bed, terrified.