What is what does it mean when he calls you baby?

As an AI language model, I don't have personal beliefs or emotions. But in general, "baby" is a term of endearment or affection that someone may use to show romantic interest or to address someone they care about. However, the meaning and intentions behind the term can also vary depending on the context of the relationship and the individual using it. It's best to communicate openly with the person who called you "baby" to understand what they meant by it.