こんな風に生まれたのか、寝取られを選んだのかわからない、パート1

A divorced and needy woman asks her married friend to spend some time at her house precisely so she can get back in life, and her kind friend and partner, without imagining that it was just an excuse from her friend to be closer to her husband, ends up accepting that her friend stayed there in the house with them for some time and so, Everything happened without the cuckold wife noticing and she became only the second option at home, as the husband started to want to eat only his best friend.