My wife's recently widowed mother had to move in with us, due to her finances and she needed help.
I setup a bedroom and living quarters for her Mom downstairs. Her Mom was still attractive for 58 years old, and I have to admit I got huge hardons around her. I had lots of excuses to go downstairs and flirt with her mother, as my raging hardon became very visible. She would leave her blouse unbuttoned so that i could see her big bosoms, and hard erect nipples that turned me on even more. One day I asked her to dance to a romantic song that was on the radio, and I shoved my hard cock against her belly as wee slow danced together. She liked it and rubbed against me to stroke my hard cock with her body as we danced tight together. I grabbed her bog soft ass, and pulled her up tighter against me as I thrust my cock against her, and squeezed her sexy ass with every thrust. I could not stop myself, I pulled her skirt up, and pulled out my cock, and stroked my hard cock between her thighs as we bumped and grinded each other. She tried to stop me, but I was too strong. I ripped off her panties, threw her on the couch, and slowly slid my rock hard cock deep into her pussy a bit at a time, deeper with every thrust, until I was balls deep inside of her! She had several strong orgasms as I fucked her hard until I blew my entire load inside of her quivering pussy.
Since then, I am fucking my wife's mother on a regular basis, and my wife does not know.
Her mother takes way more of my sperm than my wife does!