“You said the same thing to me five years ago, Rei.” For five years, I have secretly been fuck buddies with Kitayama, my adult son's friend. It began after my husband cheated. When an argument with him left me devastated, Kitayama confessed his feelings for me. I wanted to return those feelings and get back at my husband, so we crossed the line that night. From then on, we stopped being merely a mother and her son's friend and kept seeking each other whenever the family was not looking. But when Kitayama got a girlfriend, our relationship began to unravel.