Ian Kerner, Ph.D., is a sex therapist and New York Times bestselling author of numerous books, including She Comes First, which has been translated into more than a dozen languages. He contributes regularly to CNN on topics related to sex and relationships and is the co-founder of the Sex Therapy Program at the Institute for Contemporary Psychotherapy, one of the oldest and most respected not-for-profit mental health training and treatment facilities in New York City.