What does it mean when a girl calls me baby?

There is no universal meaning to a girl calling you 'baby'. 'Baby' is a popular expression, a cute name, that is loosely used by many men and women when referring to someone special in their life. It can be meaningful or meaningless. It may mean nothing. She may call all the boys she speaks to 'baby'. On the other hand, she may think of you as special. You will need to hold on for a while longer to see what the girl's intentions are and what exactly she means when she calls you baby. Look for other signs.