Does he sweat or perspire around you? Sweating is another sign of nervousness.
Does he fidget with his hands, clothes, or his hair when you talk to him? These things are definitely a sign of nervousness talking to you makes him so flustered that he can't keep still.
If he looks down, crosses his arms, avoids eye contact, or makes nervous gestures more than usual when he’s with you, chances are that he’s making an extra effort to hide his interest in you. getting near you, touching you, and other look-at-me body language), watch for signs that he’s uncomfortable around you. However, instead of looking for the usual flirting behavior (ex.