The Seven Principles for Making Marriage Work: A Practical Guide
John M. Gottman, Nan Silver, 2004

10 Lessons to Transform Your Marriage
Drs. John and Julie Gottman & Joan DeClaire, Crown Publishers, 2006

Conscious Loving: The Journey to Co-Commitment A Way to Be Fully Together
Without Giving Up Yourself
Drs. Gay & Kathlyn Hendricks, Bantam Books, 1990

A Couple's Guide to Communication
John Gottman, Howard J. Markman, Jonni Gonso

Do I Have to Give Up Me To Be Loved By You?
Drs. Jordan & Margaret Paul, Hazelden, 1983

The Eden Project: In Search of the Magical Other/A Jungian Perspective on Relationship
James Hollis, PhD

The Good Marriage: How and Why Love Lasts
Judith S. Wallerstein & Sandra Blakeslee, Warner Books, 1995

Hold Me Tight: Seven Conversations for a Lifetime of Love
Susan Johnson Ph.D., Little Brown & Company, Hatchett Book Group, 2008

How To Be An Adult in Relationships:
A Handbook on Psychological and Spiritual Integration
David Richo;, Shambhala, 2000
In Spanish: Como mantener relaciones estables y duraderas (Amat: Barcelona)

Journey of the Heart: The Path of Conscious Love
John Welwood, Harper Perennial, 1995

Love is Never Enough
Aaron Beck, New York: Harper & Row, 1994

Passionate Marriage : Keeping Love and Intimacy Alive in Committed Relationships
David Schnarch, Paperback, 2009

Resurrecting Sex : Resolving Sexual Problems and Rejuvenating Your Relationship
David Schnarch, James Maddock

When the Past Is Present: Healing the Emotional Wounds That Sabotage Our Relationship
David Richo, Shambhala, 2008

Why Him Why Her
Helen Fisher, PhD

Sexual Intimacy

Discovering Your Couple Sexual Style: Sharing Desire, Pleasure, and Satisfaction
Barry W. McCarthy, Emily McCarthy, 1984, Taylor and Francis Group 2009

For Each Other : Sharing Sexual Intimacy
Lonnie Barbach, 1982, 1984, 2001

Mating in Captivity, Unlocking Erotic Intelligence
Esther Perel

Rekindling Desire: A Step by Step Program to Help Low-Sex and No-Sex Marriage
Barry W. McCarthy, Emily J. McCarthy

Other Books by Lonnie Barbach :

Seductions: Tales of Erotic Persuasion
Barbach, L., Miami: Dutton, 1999. Translated into: German and Dutch.

50 Ways to Please Your Lover: While You Please Yourself
Barbach, L. Miami: Dutton, 1997. Translated into: British and Italian.

Loving Together: Sexual Enrichment Program
Barbach, L., New York: Brunner/Mazel, Inc., 1997

The Erotic Edge: Erotica for Couples
Edited by Miami: Dutton. British, German, Dutch editions and on audio tape.

Going the Distance: Finding and Keeping Lifelong Love . Barbach, L. and Geisinger, D., 1991 Doubleday. Translated into: German, Dutch and Portuguese.

The Intimate Male: Candid Discussions About Women, Sex and Relationships . Barbach, L. and Levine, L., Anchor Press/Doubleday, 1983. Translated into: German.

Infidelity

After the Affair: Healing the Pain and Rebuilding Trust When a Partner Has Been Unfaithful
Janis Abrahms Spring Ph.D & Michael Spring. Harpercollins, 1997

Infidelity: A Survival Guide
Don-David Lusterman Ph.D. New Harbinger Publications, Inc., 1998

Not Just Friends: Rebuilding Trust and Recovering Your Sanity After Infidelity
Shirley Glass, Simon and Schuster, 2003