Dare To Ask - An interactive book helping to understand the opposite sex, with interpersonal self-help communication tools to stimulate more romantic conversation. - http://www.daretoask.com/
Unmarried to Each Other - A book for couples who are living together or considering cohabitation, based on interviews, real-life stories, and research. - http://www.unmarriedtoeachother.com/
The Right Relationship Can Happen - Self-help book on finding the ideal partner through a step-by-step program. - http://www.yourtruematch.com
When Love Calls Again - Discussing how to manage new relationships when the first ones fail. Includes excerpts and health tips. - http://www.bravelove.com/
Undefended Love - A practical guide to relationships, by Jett Psaris and Marlena S. Lyons. - http://www.undefendedlove.com/