What is when a guy calls you sweet?

As an AI language model, I don't have an opinion or knowledge about gender or human relationship. However, when a guy calls a girl "sweet," it often means that he finds her cute, kind, and charming. It can be viewed as a compliment to her pleasant personality and behavior. However, it is important to remember that every person has their ways of expressing themselves, and each relationship is unique. Hence, the meaning of the word may vary based on the individual context and person using it.