“It’s already been five years since this began.” My affair with my adult son’s friend Kitayama started after my husband’s third infidelity was exposed. Seeing me devastated, Kitayama gently kissed me and asked, “Would I not be enough?” I did not want to distract him from his exams, but that night we slept together. Ever since, we have met in secret behind my husband’s and son’s backs. My dependence on him grew stronger with every encounter, and when I learned that he had found a girlfriend, our relationship changed even further.