What makes a girl break up with you if you are a good boy friend?

A girl will break up with you if you don't meet certain needs or wants she has. A real woman must be stimulated emotionally, intellectually, spiritually, and physically. The maturity of the woman is also an important factor in whether or not she wants stay in a relationship. Know that everyone is different and some are in a relationship for different reasons. Be aware of who you are, who she is and how you both can meet each others wants and needs, so that you both can be a complement to each other.