It's challenging to determine the specific reasons for someone's behavior without more context, but there could be several potential explanations for this situation. Here are some possibilities:
Nervousness or attraction: Sometimes, when someone has feelings for another person, they might feel nervous or anxious around them. This nervousness can make it challenging for them to initiate conversations or express themselves freely.
Fear of rejection: If this guy has feelings for you or is interested in you, he may fear rejection or worry about how you might react to his advances. As a result, he may find it easier to talk to other girls who he perceives as less intimidating or less likely to reject him.
Different dynamics: People can have different levels of comfort and familiarity with various individuals. It's possible that he has established different types of relationships with other girls, which makes it easier for him to communicate with them.
Social pressure or expectations: Sometimes, societal norms or peer pressure can influence how people interact with others, especially if they are trying to maintain a specific image or avoid rumors or gossip.
Misinterpretation: It's also possible that you may be misinterpreting his behavior. While it may seem like he's trying to approach you and then walks away, there could be other reasons for his actions that are unrelated to you.
Past experiences: Past experiences or relationships could be influencing his behavior towards you. If he has had negative experiences in the past with someone similar to you, he might be hesitant to approach you for fear of repeating those experiences.
Lack of confidence: Despite not being shy in general, he might lack confidence specifically when it comes to talking to you due to various reasons.
In any case, if you are interested in him and would like to know more about his feelings or intentions, it may be helpful to initiate a conversation in a friendly and non-threatening manner. By creating a comfortable and open environment, you might encourage him to share his thoughts and feelings more freely.
Remember that everyone is unique, and the reasons behind his behavior may be complex and individual to him. Communication and understanding are essential in any relationship, so approaching the situation with openness and empathy can help foster a better connection between both of you.