Although the concept of love may at times be hard to define, there's no question it plays a defining role in all relationships, from global society all the way down to the most intimate of partnerships. In this first episode of a series on the many faces of love, Dr. Amen and Tana are joined by Amen Clinics' own Natalie Buchoz for a discussion on EROS, which is the sensual, romantic version of love.