My ex-wife was an ER nurse. We used to love to talk about her fucking other men, and elsewhere, I recounted the story of how she hotwifed me with a friend of mine a couple of times. Very hot, despite a certain awkwardness, but after two encounters, it didn't happen again and we ended up divorced over other issues. We remained friends though, and even occasional lovers, even after I moved away from the area.
I asked her to come visit me, and bought her a roundtrip ticket on Southwest. The day before she was to arrive, she called me to tell me she wasn't coming, and went on to reveal that she had exchanged the ticket for one to visit a doctor she used to work with who now lived out of state, and that she'd be fucking him all weekend. She went on to describe his massive cock and how much she loved it (she had an oversized pussy, so this was ideal for her). She was normally pretty restrained in talking about sex at all, and even during our hot times together, wanted me to do all the talking, so this was especially hot.
Later, she did visit me, and we enjoyed her recounting of her adventure with her doctor friend, which she told me in great detail, cumming furiously as she rode my dick and recalled how he had filled her. She was really quite conservative, except when she got worked up, then she was wild. She got super hot telling me how she was such a slut, using graphic language to describe how she had spread her pussy for him, sucked him, and how badly she wanted to have him again.