My wife Mary always had a decent figure - shoulder length blond hair, beautiful c cup tits, neatly trimmed pussy and a nice round ass.
She also loved to show those assets, whenever possible. When aroused, her nipples would turn into hard raised buttons. The more aroused she became, the wetter she got.
In our late 20's, 30's and early 40's, like some married couples, we had our share of sexcapades with each other that always led to incredible sex. As we began getting closer to our 50's, we noticed a decline in our sex life, and our bodies were beginning to change - her's more so than mine. Her breasts were slowly starting to sag, her figure was rounding out, and she wasn't adventurous or easily aroused anymore.
Lying naked in bed one night, we began talking about what was happening to us and I asked her, "Do you have any regrets with anything we might have done together, or any regrets about not doing something you wished you had done?"
While she was slowly rubbing my balls, she responded, "Not really, although I sometimes I wonder what having sex would have been like with someone else."
"Do you have anyone in mind," I asked and she said, "I dated a guy high school, who still lives in my home town and I sometimes think about him."
As she said that, I could feel her nipple on my chest getting hard, and my dick was beginning to stiffen.
I said, "You travel home once or twice a year, why don't you look him up? We're not getting any younger and we know we're both going through some physiological changes. Now is the time do something while you look and feel desirable. Of course, there would be certain rules you have to follow, but I certainly wouldn't have a problem with you hooking up with him."
Her breathing became faster and while she began to stroke me she asked, "What rules?"
"This is a one time only situation," I said. "You must be nasty and slutty. He can cum in your mouth, on your face and body, but not in you - he must wear a condom. I have to hear every sordid detail, nothing withheld, and while you're telling me, you'll be kneeling between my legs slowly stoking me and keeping my dick lubricated with your saliva and pussy juices."
We ended the evening pleasing each other multiple times.
About six months after our conversation, Mary told me she was flying home to see her grandmother who was hospitalized, and she would be gone a week. I went into our bedroom and took 3 red packaged condoms out of my night stand and handed them to her. I told her if she wanted to go through with what we spoke about, she needed them.