But this doesn't mean that your boy is Hannibal Lecter.
One specific type of body language that reliably distinguishes victims from non-victims is gait. A previous study found prison inmates who had been convicted of sexual assault identified targets as vulnerable because of certain motions within their walk.
The 'hypersexual' have more sexual partners than the rest of the population, fantasise more about others than their current partner, and tend to favour more sex without love. They take greater pleasure in casual sex with different partners, and don't need attachment to enjoy lovemaking.