He may view it as "weak." Sometimes, the stories he may reveal about his background may not add up – if you've met his highly dysfunctional family and he places them on a pedestal, watch out. Many narcissists idealize aspects of their lives that aren't perfect and paint a rosier picture than that which actually exists. When entering the relationship, narcissists may project an appearance of confidence and strength. They like to target potential partners who appear to lack self-confidence and may second guess themselves frequently. These "weaker" people allow narcissists to exert their will easier than someone who will stand up for herself. Once a relationship with a narcissist is over, the narcissist may tend to heap blame on the "weaker" partner, absolving himself of all responsibility and generally making the ex feel terrible about herself. It's her responsibility only to take care of herself and learn to believe in herself again.