Three years have passed since I married Karen, and daily work stress has built up, steadily worsening our relationship. Karen became busier than before, and I was shocked to hear she was training alone with a male trainer at the gym. Just as my work finally settled down, I regretted making her feel lonely and sent her a bouquet as a token of gratitude. However, Karen's response felt distant and cold. After several days of her repeatedly ignoring my calls, I began realizing something was terribly wrong.