Several great books have been written on couples sex therapy. Preview them here:

Erotic Intelligence: Igniting Hot, Healthy Sex While in Recovery From Sex Addiction by Alexandra Katehakis, MFT
“When you’re brave enough to surrender and take responsibility for joining with your partner, you experience a depth of connection that far surpasses the chemical rush of any sexually addictive exploit. Erotic sex makes sex addiction look like child’s play because it requires the maturity and responsibility for oneself and mutual caring for each other that only an adult can muster. Erotic Intelligence is a resource that any couple can use together to know themselves and each other better, towards the goal of creating and maintaining a rewarding sex life.” – Alexandra Katehakis
“Erotic Intelligence provides couples healing from the pain of sexual addiction with a roadmap to re-write their sexual story, from one of betrayal, to one of healing, and finally to one of vibrant erotic sex.” – Stefanie Carnes, PhD, CSAT; Author of Mending a Shattered Heart: A Guide for Partners of Sex Addicts.

Love & War in Intimate Relationships by Marion Solomon & Stan Tatkin
Neuroscience and couples therapy come together to help couples break patterns of bad behavior. Two leading therapists apply the latest neuroscience research on emotional arousal to teach readers to help couples regulate each other’s emotions, maintain secure attachment to each another, and foster positive relationships.

Intimacy & Desire by David Schnarch
Intimacy & Desire gives couples simple but effective exercises that will help them reconnect with each other sexually and take their sexuality to places they never imagined.

Passionate Marriage by David Schnarch
Therapist Schnarch writes that traditionally, marriage counselors have specialized in either sex therapy or relationship therapy; he argues that the two are so inextricably intertwined that to try and treat them separately is not worthwhile. Instead, he focuses on sex as a crucible in which a marriage can be strengthened and intimacy deepened. This is a thoughtful and inspiring book.

Mating In Captivity: Reconciling the Erotic and the Domestic by Esther Perel
Perel, a celebrated therapist, examines the conflict between domesticity and sexual desire, and explains what it takes to bring lust back into a loving but sexless relationship.

Lean On Me: The Power of Positive Dependency In Intimate Relationships by Marion Solomon
Dr. Solomon shares her professional expertise and personal experience to shatter the widespread myth about independence versus interdependence in relationships. Filled with insightful anecdotes and clear-cut analysis, this work shows people how to create mutually satisfying attachments and achieve emotional sharing and intimacy through meeting.