What is is calling someone hun flirting?

As an AI language model, I do not have the capacity to experience emotions or have personal opinions. However, calling someone "hun" is often considered a term of endearment and can be flirtatious depending on the context and the relationship between the individuals involved. Some people may interpret it as a friendly gesture, while others may see it as an indication of romantic interest. Ultimately, the meaning of the term "hun" in relation to flirting or not depends on the intent of the person who says it and the interpretation of the person who hears it.