What do men mean when they say you've grown up?

A man can say "you have grown up" in many different ways. Here are some possible explanations:

1. Maturity: He may think that your recent behavior or speech has become more mature.

2. Growth: He may think that you have grown up in some aspects, such as personal development and skill improvement.

3. Progress: He may think that you have made progress in some things, such as your studies and career.

4. Mentality change: He may feel that your mentality has changed, such as being more optimistic and positive.

Generally speaking, this man said "you have grown up" as a compliment to your progress and growth. But the specific meaning needs to be understood according to the context.