Looking for a story I remember vividly

[witegwiteg]

So the story is about a woman whos husband left for work for few days or something. A stranger pretending to know husband talks the woman into letting him in the house. The stranger slips drugs to woman. She later have sex with the stranger thinking it is her husband. The story is longer it goes on as rhe woman starts to enjoy the stranger and there is some guilt and stuff. Does it ring a bell to anyone?