How to know what your boyfriend or girlfriend is thinking
The eyes: Lying
Many body language experts claim that when people lie they look to the left and struggle to sustain steady eye contact. Yet, lots of people are aware of this and if you want to cover something up, chances are you’ll do everything you can to throw your partner off the scent.
Therefore, if you think your boyfriend or girlfriend is lying, watch their body language and see if they maintain more eye contact than usual. If they do, then there’s a chance that this shift in their behaviour is a sign they’re not telling the truth.