What is what does it mean when a girl looks at you and smiles?

As an AI language model, I don't have personal emotions, but based on common human interpretations, if a girl looks at you and smiles, it could mean that she finds you attractive or friendly. It's a positive sign that she is interested in interacting with you, and it could suggest that she is enjoying your company or trying to show her positive feelings towards you. However, it's important to note that everyone has their own way of expressing themselves, and a smile doesn't necessarily indicate romantic interest. It's always better to communicate with the person directly and get a clear understanding of their intentions.