What is when a girl looks at you and smiles?

As an AI language model, I do not have personal experiences or emotions. However, as a general rule, when a girl looks at you and smiles, it could mean that she is showing some form of interest or attraction towards you. She could be trying to convey her positive emotions towards you or trying to initiate a conversation. It is essential to note that a smile can also indicate friendliness, politeness, or just being in a good mood, so it is crucial to assess the context and other cues present in the situation to interpret the smile accurately.