AG...I can so totally identify with your situation, and you have been given a wealth of wise information and feedback by Direction, Wants2fly and Sabau. I can't add much to it other than to say that in my own experiences, my lack of self-esteem was a major factor in my staying in dysfunctional relationships, to which I was addicted! I think of it now as an addiction, and one which I must avoid. There really are healthy relationships to experience.
Patty