Index Of Girlfriend How Can I Save My Best Friend From His Emotionally Abusive Girlfriend?

How can I save my best friend from his emotionally abusive girlfriend? - index of girlfriend

This issue arose after this question: http://answers.yahoo.com/question/index?qid=20080120094918AAJAySK&r=w

This leads me to this site:
http://www.helpguide.org/mental/domestic_violence_abuse_types_signs_causes_effects.htm

when I realized that emotionally abused are completely .... Each of the symptoms.

How can I avoid this?