Everything is clear - he tricked her into sex, but who really filmed it? He obviously filmed it with a different camera than the one he had in his hands! A hidden camera does not give this angle and quality of shooting! So the cameraman in the room with a professional camera and a camera in his hands just a farce.
An empty road, nice weather, a guy with a big dick, a young sexy girl and they're a couple at that. Who's going to guess what happens next?