The following two books were extremely helpful to me. I recommend them highly.
Evans, Patricia. The Verbally Abusive Relationship: How To Recognize It And How To Respond (Second Edition). Holbrook, MA: Adams Media Corporation, 1996.
Kingma, Daphne Rose. Coming Apart: Why Relationships End and How
to Live Through the Ending of Yours. New York: Fawcett Crest, 1987.
Here are some other books that I quoted and/or found useful.
Berzon, Betty. Permanent Partners: Building Gay and Lesbian Relationships That Last. New York: Plume, 1988.
Brandon, Nathaniel. The Importance of Self-Esteem. Deerfield Beach, FL: Health Communications, Inc., 1992.
Evans, Patricia. Verbal Abuse Survivors Speak Out: On Relationship and Recovery. Holbrook, MA: Bob Adams, Inc., 1993. This is the sequel to the above. Not as good.
Forward, Susan with Torres, Joan. Men Who Hate Women & The Women Who Love Them. New York: Bantam, 1986.
Jeffers, Susan. Feel The Fear And Do It Anyway. New York: Fawcett Columbine, 1987.
Kirshenbaum, Mira. Too Good To Leave, Too Bad To Stay. New York: Dutton, 1996.
Kuriansky, Judy. The Complete Idiotís Guide to Dating. New York: Alpha, 1996.
Wegscheider-Cruse, Sharon. Learning To Love Yourself: Finding Your Self-Worth. Deerfield Beach, Fl: Health Communications, Inc., 1987.
You can find these titles at any major bookstore--Borderís, B&Nís, or Geneís.