So she approached me with idea in the beginning of this pandemic. She is a nurse and during those days the doctors, nurses and staffs were advice by the local medical board to not to go home frequently but their schedules were made in such a way that she would be away for 30 days, and then go for quarantine for 14 days and then come back home for 10 days and then go back to work. She had two kids, including a newborn so that was another cause why she didn’t wanted to take much risk.
My husband and I have an open marriage as travels a lot for his work. During this time, he got stuck in another city and decided to stay there for a while and look after the work from there. I was pregnant with our first one at that time and lived alone. So she approached me to keep her husband a ‘company’ while she was away. She chose me because she wanted him to stick with one woman for this and it should be someone she trusted. Also, she wanted someone to take care of her kids as well along with her husband.
So I moved in with my brother in law after she was gone. I wanted a company as I was pregnant and also because my sex drive had gone up. My BIL and I got sexually compatible very well. He too had a high drive which was perfect for me at that time. We shared the same room and when my sister was home, I shifted to the other room until she was gone again. He also took a good care of me and as fulfilled all my needs. So much so that my husband would sometimes call him to know how I was doing. It was him who was beside me when I went through labor.
Things have gotten better in here now. We are still active. My sister visits often now and so does my husband. Both of them seem to be okay with this relationship.
Source: reddit.com/r/gonewildstories/comments/lbkbsz/f_f_my_f_34_sister_f_28_who_is_a_nurse_wanted_me