Running hands through one's hair when seeing someone they like is a common nonverbal behavior and can be a sign of nervousness or attraction. Here are some reasons why some guys may exhibit this behavior:
Nervousness: When a guy sees a girl they like, they may feel nervous or anxious, especially if they want to make a good impression. Running hands through their hair can be a subconscious way to release some of that nervous energy.
Self-grooming: People often engage in self-grooming behaviors when they are conscious of their appearance, and they want to make sure they look their best. Adjusting or running hands through the hair can be an instinctive way to tidy up one's appearance when feeling attracted to someone.
Attraction and flirting: Running hands through the hair can be a subtle flirting technique. It draws attention to the person's hair, which can be a sign of attractiveness and can signal interest in the other person.
Body language signal: Body language plays a significant role in communication, and certain gestures can convey interest and openness. Running hands through the hair can be a way of indicating positive feelings towards the person they are looking at.
Subconscious behavior: Sometimes, people engage in certain behaviors without even realizing it. Running hands through the hair might be a habit that comes naturally when feeling a particular emotion like attraction.
It's important to remember that body language and nonverbal cues can vary from person to person, and not all guys will exhibit this behavior when they see someone they like. People's actions and mannerisms can be influenced by their individual personalities, cultural backgrounds, and upbringing.
If you're trying to interpret someone's body language or understand their feelings towards you, it's best not to rely solely on one gesture. Instead, pay attention to a combination of verbal and nonverbal cues to get a better understanding of their intentions and emotions.