What is he calls me bae?

"bae" is a slang term that originated from the acronym "B.A.E." which stands for "Before Anything Else". It is usually used as a term of endearment or affection towards someone such as a romantic partner or close friend. When someone calls you "bae", it can imply that you are the most important person in their life and they prioritize you above everything else. However, it's important to note that the term "bae" may have different meanings or connotations for different people, so it's always best to ask for clarification if you're unsure about what someone means when they call you that.