BlueMoon,
It hurts to hear that someone doesn't believe they deserve love. I believe that everyone deserves to love and be loved. Do you? Are you just the exception? Everyone includes you. I wish there was something I could say to convince you of your worth. I like Rainbow's mirror exercise...Louise Hay recommends the same thing.

"Self-esteem is what you think about yourself, and you have the freedom to think anything you want. So why would you want to belittle yourself?
You were born extremely confident. You came into this world knowing how wonderful you are. You were so perfect when you were a tiny baby. You didn't have to do anything - you were already perfect - and you acted as if you were aware of that. You knew you were the center of the Universe. You weren't afraid to ask for what you wanted. You freely expressed your emotions. Your mother knew when you were angry; in fact, the entire neighborhood knew it. And when you were happy, your smile lit up the whole room. You were so full of love and confidence.
Little babies will die if they don't get love. Once we're older, we learn to live without love, but no baby will stand for that. Babies also love every inch of their bodies. They have no guilt, no shame, no comparisons. They know they're unique and wonderful.
You were like that." - Louise Hay