When a girl looks at someone, it can mean a variety of things depending on the context and her body language. It may indicate interest, attraction, or an attempt to gauge the other person's reaction. Prolonged or repeated eye contact combined with a smile often suggests she is interested. However, sometimes she may just be being polite or curious, so it's important to consider additional cues and the situation. Key things to do when a girl looks at you include deciding whether to look back, keeping eye contact briefly, smiling confidently, and using open body language. Approaching her with respect and confidence can be a good next step if there is mutual interest. It's essential to be attentive to her comfort and signals throughout the interaction. In summary, a look from a girl can be a subtle invitation to connect or simply a passing glance. Reading her body language and responding appropriately with confidence and respect is the best approach.