My mother married for the second time with a younger guy. At first it was great, every time she wanted a fuck he was always ready to give it to her. But with time my mother's libido got lower but the guy still needs his daily dose of sex, that my mother is not ready to deliver so I come to her rescue. If it wasn't me my mother had already been cheated by him a thousand times. This way he only needs me so everything stays in the family.