I want a child! With that single-minded desire, my wife and I were working hard on our fertility journey. However, there was no sign of her conceiving. In our grief, we resorted to a final measure: a month of abstinence to produce thick, potent sperm. I hoped this would finally work... But while my wife was filled with anticipation, I was fighting off intense sexual urges, my cock rock hard. My mother-in-law had been secretly peeking at us, and seeing my erect cock, she became incredibly aroused...