Uncertainty is unattractive.

Desperation is unattractive.

Begging is unattractive.

Certainty?

Certainty is devastating.

The villain doesn’t ask if he belongs in the room. He behaves like the room was built for his presence. He doesn’t chase because chasing implies doubt.

He waits.

He watches.

He knows.

And the heroine hates him for it.

Which is basically foreplay.