I fucked my blind stepmother in the ass. She didn't know it was me.

I fucked my blind stepmother in the ass. She didn't know it was me. My stepmother had a study done on her eyes that left her unable to see. Her husband asked me to take care of her while she rested, but I got horny for her and started touching her. She got horny and we fucked without her knowing that I am not her husband.