If feel like you can't let go and/or can't move on without your one and only true love you can find comfort and learn about yourself by reading Codependent No More by Melody Beattie http://astore.amazon.com/nydacom-20/detail/0894864025
You really do need to love yourself before anyone can truly love you. If you need help raising your self-esteem I highly recommend The Self-Esteem Workbook by Glenn R. Schiraldi http://astore.amazon.com/nydacom-20/detail/1572242523