My wife and I have known John for years. He and I worked together for a while, and became good friends. Mary and I would often socialize with John and his wife, Ellen, and we had some great times. Mary was very fond of John, she felt he was a really sweet guy, but didn't think as highly of Ellen. Ellen was in fact a bit of a bitch, and treated John pretty badly at times. She ended up cheating on him, and then filing for divorce. John was devastated.
My wife was very supportive of John through this, and they developed a close friendship. Strictly platonic, to be sure, but Mary often teased me that If i ever cheated on her, John would be her revenge fuck. They had a flirty, fun dynamic, but I was never really jealous. As for John, he often told me that Mary was an amazing woman, and I was a lucky man. I knew both were true!
John was renting a small lake cottage, having sold his house as part of the settlement. Mary and I were on our way to visit him on a beautiful Sunday afternoon, and I couldn't resist teasing her a bit.
"I'm sure John will enjoy seeing you in your bathing suit all afternoon." At 35 Mary looked amazing, truly in her prime. The few extra pounds she had put on since having a child, settled in all the right places.
She smirked and said, "Maybe I don't mind John checking me out, he can look all he wants."
What Mary didn't know, is that a few months back I had shown John some Boudoir photos of my wife that she had taken for Valentine's day, 5 years ago. Some were lingerie shots, plenty sexy, and some featured her beautiful tits, on full display. So John was well aware of how fine she looked under her clothes!
I continued to tease, "Well, I suppose if I ever wanted to share your charms with anyone, it would be John. But you are far too modest for that sort of thing."
A short moment passed, and looking straight ahead, Mary said' "I might surprise you one day."
We spent the afternoon swimming in the lake, and lounging on John's small patio, sipping good wine. The conversation was easy, and it was good to see John in such a good mood. It was a super comfortable situation.
We were all pretty buzzed from the wine, when Mary said, "I'm going in to change out of this wet suit." She was wearing a blue one-piece suit, very modest, but it showed off her curves nicely.
She went to the sliding door, that opened into John's bedroom. This is where we had changed earlier. She left the door open about a foot, but there was a full curtain on the inside so she disappeared from our view. After a minute or so, John turned toward the door and called out, "Let me know if you need any help in there!"
We both chuckled, and after a long moment, Mary's voice came from inside.