My wife is a single mother with her mother in law. I married my wife because I felt like I was just rolling into that situation. My wife has a low sex drive to begin with, and even if I invite her, she only responds occasionally. I was irritated when she rejected me again today, so I left the room. I noticed a faint sigh coming from my mother in law's room and peeked in secretly. I had heard my mother in law's sigh many times since we started living together, but this time I couldn't hold back and ended up going into her room. My mother in law was surprised and said no, but when I touched her already sensitive body and let her touch my hard cock, she listened to me, even though she was confused. The next day, I couldn't get my mother in law out of my head, so I really wanted to have sex with her, so I left work early and waited for my wife to go out and returned home. When I secretly watched my mother in law cleaning, she sighed loudly and fidgeted. I immediately hugged her and asked her, "Can't you forget about yesterday?" She said "No, stop," but she opened her body so that I could touch her easily. When I forcibly inserted my penis into her wet private parts, she accepted it smoothly and squeezed me tightly. She told me to take it easy because it had been a while, and her face showed a lewd womanly expression.