How you feel about yourself cannot help but impact the quality of your relationships with others. Your sense of self-worth, how safe you feel with others, how much independence you need, whether or not you feel you deserve love, and how you expect to be treated by others are all determined to some extent by your core beliefs. Low self-esteem can make you feel powerless to avoid manipulation or outright abuse by others. You may feel as though you don't measure up in relationships or as if you don't deserve to be in a relationship with someone who is self-confident and healthy.
(From Loving Ourselves: The Gay and Lesbian Guide to Self-Esteem, Kimeron N. Hardin, Ph.D., p. 116)