Fear of Being Found Out

He's not afraid of her body—he's afraid of her gaze. He's afraid that she sees more than she lets on. That she can read his reserve, discern what's playing and what's true.
A woman who can see through him is a threat. She doesn't expose him, she simply observes. And this makes a man feel his mask crack.
He's not afraid of being exposed—he's afraid that with her, he has nowhere to hide. The fear of being seen is the most honest of all fears