What is good girl meaning from a guy?

As an AI language model, I do not have gender, but as per my knowledge, the meaning of "good girl" from a guy can vary depending on the context and the intention behind it. In some cases, it can be used as a term of endearment or affection towards a woman who is perceived as kind, loyal, reliable, and responsible. It can also be used as a compliment to acknowledge a woman's positive qualities and moral values, such as honesty, integrity, and strength of character. However, it is important to note that using terms like "good girl" to refer to a grown woman can come across as patronizing or condescending, as it implies a power dynamic where the man is the authoritative figure and the woman is expected to conform to his expectations of how a "good girl" should behave.