Six months ago, I married into my wife's family as her husband, beginning a new life together. Though we had been in a relationship before marriage, her father had already passed away, leaving behind her 46-year-old mother-in-law, who exudes a remarkably sensual charm. Every day, I'd see her hanging laundry, and occasionally I'd spot sexy lingerie mixed in. Each time I noticed it, I'd unconsciously start fantasizing and end up masturbating. This went on for weeks.