ALDN-307 Friend of wife suddenly wants the real thing Shouta Chisato

I'm Rifu, 54 years old. My wife, Chisato, is 49. We have no children. Five years ago, we both remarried after previous divorces.
My wife had a son from her first marriage. That son is already an adult and married.
So my relationship with my wife's son is like that of distant relatives; we see each other once every few years.
Even though we remarried at an older age, our nighttime compatibility was surprisingly good, happening about once a week.
However, I've never liked children, so to avoid any accidents, I always used condoms during intimate moments.
Recently, my wife became close with another woman from her women's group and their families got along well.
For us as an older couple, this younger couple had kids around the same age,
but we strangely hit it off, and I secretly looked forward to seeing them…
One day, I witnessed my wife in a state of shock…