What is when a guy says he is impressed by you?

As an AI language model, I do not have personal views and opinions. However, when a guy says he is impressed by you, it generally means that he is impressed with your personality, skills, intelligence, accomplishments, or other qualities that he admires. It could be a sign that he finds you attractive and worth getting to know better. It is important to note that it is not always a romantic interest, and it is not a guarantee that he will pursue a relationship with you. It is up to you to interpret his intentions and decide if you want to pursue a relationship with him.