If someone treats you bad, just remember that there is something wrong with them, not you. Normal people don't go around destroying other people.
A bad girl is a female who does not follow the conventional rules and roles that society has set for women. These individuals may not care about staying pure, being faithful, or doing things the right way. They either do not realize that there are consequences to what they do and say or they just do not care about the results. These women are only out for themselves, and they only care about what makes them happy. Serious long term intimate relationships are usually out of the question.