Roger Nygard with Christopher Ryan, author of Sex At Dawn. Recording an episode of Chris Ryan’s podcast, Tangentially Speaking.

Matt Ridley, author of The Red Queen: Sex and the Evolution of Human Nature.

Dr. Pat Allen, author of Getting To “I Do”, speaking at one of her famous relationship seminars.

Julie Schwartz Gottman, Ph.D., author of 10 Lessons to Transform Your Marriage, and John Gottman, Ph.D., author of Why Marriages Succeed or Fail, at the Gottman Institute in Seattle, Washington.

Joy Chen, author of Do Not Marry Before Age 30.

Neil Strauss, author of The Game, and, Truth.

Rabbi Lazer Brody, Marriage Counselor & Translator of The Garden of Peace: A Marital Guide for Men.

Rachel Hope, author of Family By Choice.

Robin Baker, sexual biology researcher and author of Sperm Wars.

Roger Nygard with Ty Tashirio, author of The Science of Happily Ever After.

Stephanie Coontz, Author of Marriage, A History: How Love Conquered Marriage.

Bonnie Eaker Weil, Ph.D., Couples Therapist and Author of Make Up, Don’t Break Up.