It's been almost a year since I started living with my husband's parents. My father-in-law retired early and is obsessed with his hobbies, but my serious husband doesn't seem to approve. The steady husband and playful father-in-law are nothing alike. This is also reflected in our night life. After sex with my husband, my unsatisfied body secretly seeks comfort. That night, while masturbating in the bathroom holding back my voice, the door suddenly opened and my father-in-law walked in…