One of the main reasons people want to learn how to decipher body language is to defend themselves against dishonesty. Whether you’re trying to read the true intentions of your romantic partner, looking to hook into the mind of a seemingly upstanding salesman, or simply attempting to read your best friend’s true thoughts, it’s helpful to know the cues that liars display. As always, it’s best to look for patterns of nonverbal behavior in order to get a feel for the other person’s objectives.