My wife Sue and I are late 50s, married for 35 years and now empty nesters. We are best friends with each other and have had a very good sex life but have been entirely monogamous. Sure, we joked about threesomes and foursomes but never seriously considered it. Both of us have never had a same sex experience, again it was something we joked about but never seriously considered for ourselves. We are not homophobic and didn't condemn people who were bi or gay. Maybe the opportunity or inspiration just never came up.
One Wednesday night Sue seemed a little spunkier than usual all through dinner and while cleaning up. I could tell she was in a good mood and I was thinking this might be a fun night. A little before nine she came out of our bedroom in a short cotton nightgown and asked if I would like to come to bed early. I could tell she was naked under her nightgown. I was right, I was in for a fun night. After I stripped and got into bed she passionately kissed me and pulled of her nightgown. As my hands roamed over her body I could tell she was extremely worked up and dripping wet. In an aggressive manner for her, she pushed me on my back and went to work sucking my cock. After a minute or two Sue rose and slipped her hips over me in a 69 with her on top and grounds her wet crotch into my face. I went to town licking her pussy and clit just as much as I could. While we often give each other oral and enjoy a lazy 69 on our sides, it is rare for Sue to get on top of me in one. It was apparent this was not foreplay and that she wanted us to get off this way and we both did. Once we had our orgasms Sue quickly spun around and I could see a gleam in her eyes and sum of my cum on her lips. She quickly leaned in and kissed me. I was surprised but hey, go with the flow and tasted my cum on her lips and tongue. This was something not in our normal repertoire.
Once we were on our sides recovering and looking at each other I asked what got her so worked up. She smiled and said Gail had told her something that she had been thinking about all afternoon and it just had her extremely worked up. Gail was her closest friend since they started working together several years ago. Gail and her husband Tom were slightly younger at 49 and lived about a quarter mile away so we frequently saw them socially. They are fairly conservative like us, no drugs, just wine and beer. No wild parties, no risque clothing for the gals. Not prudes but not wild.