What is he calls me pretty but not beautiful?

As an AI language model, I cannot determine the context of the situation or the speaker's intention behind using the words "pretty" and "beautiful". However, I can suggest that "pretty" and "beautiful" are subjective terms and have different connotations, meanings, and levels of admiration.

"Pretty" is often associated with physical attractiveness or charm and can imply simplicity or modesty. Meanwhile, "beautiful" generally connotes a higher degree of admiration or appreciation, involving not only physical attributes but also inner qualities such as grace, elegance, or radiance.

Therefore, if someone calls you "pretty" but not "beautiful", it may mean that they perceive you as attractive, but not necessarily at the highest level of admiration. However, it's important to note that this could vary based on the speaker's personal standards and preferences. Ultimately, it's up to you to determine how you interpret these compliments and how much weight you give them.