What is what does it mean when a guy calls you ma?

'am'

When a guy calls you ma'am, it is a sign of respect and politeness. It is a formal way of addressing a woman, especially if the woman is older or perceived to be in a position of authority. It could also indicate that the guy may be from a culture or region where using formal titles of respect is common. Overall, it is a courteous and respectful way of addressing a woman, but it may not necessarily indicate any romantic interest.