Aileen Wuornos suffers from borderline personality disorder, which brings an overwhelming fear of abandonment. When that fear escalated, it could well have been the trigger

        Aileen never held a steady job.  She prostituted for her money.  Eventually she met Selby, and formed a loving relationship with her.  She always feared abandonment when with Selby.  She always feared that Selby would leave her and she would be alone again.  Around these times when she felt that she and Selby’s relationship was rocky was when most of the murders happened.  She took out her pent up rage on the men she killed.  

        Most of Aileen’s abnormalities run into her personality because they were practically one and the same.  Her personality of being an anti social loner, with pent up rage drove her into the life she led.  She was most likely not gay, but was definitely bisexual, although she did have a hatred of men.

 Aileen often had outbursts of rage. This was proven in the courtroom when she, on a few occasions, had snapped and screamed and swore not only at the judge, but also at the jury.  

        All Aileen was looking for in her life was love and acceptance, which she felt she had with Selby.  When she had feelings that she and Selby’s relationship was in trouble she would kill a john and flash his money around Selby so they could have some “fun.” Aileen found love, although it was too late to help herself.