While there is no one-size-fits-all answer to this question, being called "bro" by a girl can sometimes be an indicator that you are in the friendzone. The term "friendzone" refers to a situation where one person has romantic feelings for another, but those feelings are not reciprocated, and they are seen only as a friend.
However, it's essential to remember that language and context can vary between individuals and cultures. Some people might use terms like "bro" or "dude" as casual expressions of friendship without intending to signal any romantic implications. They may just see you as a close friend or consider you part of their inner circle.
To better understand the situation, pay attention to how she treats you in other aspects. Does she seek out your company often? Does she confide in you about personal matters or ask for advice on her romantic interests? If she treats you primarily as a friend and there are no romantic signals from her side, it's more likely that she sees you as a friend.
If you have romantic feelings for her and want to clarify the situation, consider having an open and honest conversation with her. Communication is crucial in any relationship, and expressing your feelings respectfully can lead to a better understanding of where both of you stand. Just be prepared for the possibility that she may not share the same romantic feelings, and it's essential to respect her boundaries and decisions.