If a girl's smile doesn't mean anything, it may be due to a kind of etiquette, but if this happens frequently, it should be a kind of implied affection, and maybe the girl's heart has reached the degree of liking.
The most beautiful expression in the world is a smile. Many boys usually feel warm when they see their favorite girls smiling at themselves, and may have fantasies. "Does this girl like it? Does this girl feel very happy and excited when she sees it? " Most boys have this misunderstanding. To be on the safe side, it is recommended to have more contact with this girl.
Extended data:
When a girl likes someone, she usually shows her best side. For example, a lazy girl will dress up and show her best when she sees her male god, and a smile is often the most direct and direct thing. If she has no professional training and is not a weather-beaten girl, it is difficult for her to hide her inner joy. Of course, drama is another matter. Therefore, if everything is done and the other person is happy, this girl just likes the other person.