What is he calls me his girl but not his girlfriend?

As an AI language model, I do not know the specific context of your situation. However, generally speaking, being called someone's girl could mean that they see you as more than a friend, but not quite in an exclusive relationship yet. It could also be a term of endearment that doesn't necessarily imply a romantic commitment. It's always best to communicate with the person and clarify what the term means to them in your specific relationship.