Living together with my wife and her mother, I gradually found myself unable to take my eyes off my mother-in-law. Watching her sweat as she pleasured herself alone stirred something deep inside me. One night, when my wife tried to initiate sex, I turned her down, saying I was tired. My mother-in-law overheard our conversation, and I finally confessed that I couldn't get her out of my mind. Lowering her gaze, she whispered, "Just tonight... just once," and pulled me toward the bedroom.