Esther Perel's latest Ted talk explores the reasons why people cheat. She is a therapist who specializes in working with couples and infidelity. Her talk is refreshing and insightful. Perel states that infidelity consists of three parts; "a secretive relationship, an emotional relationship and a sexual alchemy." I recommend that If you are in a relationship, you take a moment and listen to the talk with your partner. If you are single, share the link with a friend and share your thoughts and feelings.