My wife rejected my invitation tonight again. She was engrossed in a mobile game and didn't even look at me. It's been about six months since we last had sex, I thought, as I headed to the bathroom. I heard some distressed sounds coming from my mother-in-law's room, where we live. I went inside and found her masturbating, trying to keep quiet. If my wife wouldn't do it, I thought, then maybe my mother-in-law would, so I gently embraced her, saying we'd get closer and comfort each other. At first, she was reluctant, but then she seemed to give in, closing her eyes and saying it was special. The next day, I left work and waited until my wife was out shopping, arriving home just as she was leaving. Surprised by my return, my mother-in-law gave me a big hug and squeezed her as if continuing from the day before. Perhaps because of what happened yesterday, she immediately began to feel aroused. Excited by the sight of my stepmother, who had been reluctant until then, now feeling lustful, I stripped her of her underwear, placed my stiff penis between her legs, and penetrated her in one go.