Never confuse life labels with actions. We as human beings get so wrapped up in the definitions of the people we have in our lives. Terms like "family," "brother", "wife", "father", etc., all carry connotations of loyalty which we sometimes apply more credit and association to, than what these individuals should actually have. If someone, anyone, is harming you whether its by design or less deliberate means, you owe yourself the clarity that you possess to protect yourself and not get lost in the issues that are consuming them (and potentially yourself). Protect your back.