Friend is mad after hearing about my sex life

I’ve learned that my (53f) husband (John, 55m) shared with his close friend (Tom, 55m) the details of an intimate encounter we had recently and somehow Tom’s wife is annoyed with me now.

The basic details are this. During a recent text exchange, John and Tom were discussing oral sex. Tom said he no longer receives BJs from his wife, because she thinks they are kind of slutty and more a college or 20s kind of thing. John said sometimes they can be very much connecting and loving, and Tom asked for an example. So John shared details of a recent BJ that I gave him.

I saw the texts and it was kind of explicit. John described a time when I hadn’t been feeling physically well for about a week, and offered to give John some attention. Sat him on the bed and knelt on the floor in front of him and did my thing. He described it as a loving thing, just giving him attention and satisfying him, but he did describe some details (what I do with my hands and thumbs that makes him crazy, what I said to him as I finished him with my hands, how after he finished I got on the bed while he was kinda out of it and rubbed his face and scalp and chest gently as he started to doze off, how I cleaned him up).

Well, Tom’s wife saw these texts and let me know immediately. She’s upset that John told Tom so much detail, and seems to think I should be very upset too. I let her know I didn’t think it was a huge deal, guys talk to their close friends about things which is healthy. She has given me the cold shoulder since. We are friends, not exactly close, but that seems to be on hold now.

Should I be more understanding of her annoyance here? I don’t know what is behind this.