The Sugars continue their exploration of infidelity by hearing from people who have betrayed their partners. They discuss a letter from a desperate wife, whose husband gave her a second chance after an emotional infidelity, only for her to do it again; and another from a young mother who has gotten herself tangled up with the neighbor after years in an unhappy marriage. In Part 1, the Sugars heard from the Betrayed. And in Part 3, the Sugars speak to a leading expert on infidelity, who will make you rethink everything …