I can share.
My ex-wife's friend who was 20 years old chio-bu came to our house for a visit as she was having problem with the family and her boyfriend was then in prison.
It was approaching midnight but it seems she was not going to go back soon although I'm all ready to go to sleep. My ex-wife asked her to go back but the friend asked if she could sleep in our house instead.
We told her that we do not have a spare bed and she said that the three of us could sleep together (meaning my ex-wife, me and her).
My ex-wife was a bit angry and asked me to walk her friend home that was a few blocks away.
While walking along with the friend, she told me that she miss her boyfriend and it has been a long time that she had sex. She said, "Im really horny and cannot take it anymore". She then walked next to me and held my hands. She asked, " Do you mind helping me? I promise I will not tell your wife."
I told her that she is very attractive but I do not want to risk my marriage. I rejected her offer. I later realised that a few days later, she went out with a guy and they fucked on that same day, everyday for the next 2 weeks, until her boyfriend was released from prison.
Now that I'm divorced, I regretted for not fucking that friend.