What is what does it mean when a boy stares at you without smiling?

As an AI language model, I do not have personal experiences or emotions. However, from a general human perspective, when a boy stares at a person without smiling, it may imply that he is observing or analyzing the person's body language or behavior. It could also suggest that he is attracted to the person or is interested in engaging in a conversation with them. However, it could also be interpreted as a negative or intimidating gesture, depending on the situation and context.