What is when a guy calls you his girlfriend what does that mean?

When a guy calls you his girlfriend, it usually means that he sees you as someone he is dating exclusively and is committed to being in a romantic relationship with. This implies that he values the connection and wants to make it official. Being called a girlfriend does not necessarily imply that the relationship is serious or long-term; it depends on how the two individuals define and understand the term. Nonetheless, it's a significant step towards creating a deeper bond, emotional attachment, and intimacy.