What's a Stage Five Clinger?

We're all about getting a dose of frights this Halloween, but you know what's a little too frightening? A stage-five clinger. You know, the insecure type who just won't leave her crush alone or takes his feelings about his ex to the extreme. We're breaking down the red-flag signs that you may need to lay off — or that you have a creeper on your hands. The horror!