It's been five years since I first crossed the line with my son's friend, Yu. That night, after we had a fight after discovering my husband's third affair, Yu came to my side as I was exhausted. Then, with a pure look in his eyes, he confessed to me, "Wouldn't it be okay for me to get revenge on you for cheating on me?" I couldn't help but respond to his feelings. Then, for the first time in years, I felt his warmth against my skin, and I was reminded of the excitement I felt. We continued our secret relationship, but then we graduated, we left, and our circumstances began to change.