19. He Starts Biting His Fingernails
Nail biting is basically like Nerves 101. According to Relationship Rules, “Psychology has stated that the act of biting fingernails is a sign of insecurity or anxiety.”
If he’s hiding something important, he’s going to be anxious and he is likely to start biting on those finger nails. We know that a lot of people bite their nails as a natural bad habit, but if he newly develops this bad habit, there’s a reason behind the biting and that reason could be he’s hiding. Pay attention to what topics make him bite those fingernails out of nerves, this could provide a clue to what he’s hiding from you.
