The Psychology of Sex

The 5 Love Languages: The Secret to Love that Lasts, Edition 4

Relationship Goals: How to Win at Dating, Marriage, and Sex

Life Isn't Binary: On Being Both, Beyond, and In-Between

Couple Relationships in the 21st Century: Research, Policy, Practice

8 Rules of Love: How to Find It, Keep It, and Let It Go

How to Understand Your Sexuality: A Practical Guide for Exploring Who You Are

Hold Me Tight: Your Guide to the Most Successful Approach to Building Loving Relationships

How to Understand Your Relationships: A Practical Guide

The 5 Love Languages/The 5 Love Languages for Men Set

Hell Yeah Self-Care!: A Trauma-Informed Workbook

The Meaning of Marriage: Facing the Complexities of Commitment with the Wisdom of God

How to Understand Your Gender: A Practical Guide for Exploring Who You Are

I Love You But I Don't Trust You: The Complete Guide to Restoring Trust in Your Relationship

The Seven Principles For Making Marriage Work

A Practical Guide to Sex: Finally, Helpful Sex Advice!

Atomic Attraction: The Psychology of Attraction

The Value of Others: Understanding the Economic Model of Relationships to Get (and Keep) More of What You Want in the Sexual Marketplace

The Journal of Best Practices: A Memoir of Marriage, Asperger Syndrome, and One Man's Quest to Be a Better Husband

The Invisible Partners: How the Male and Female in Each of Us Affects Our Relationships