Her marriage didn't fail because of this. It failed because she was...
"Trapped in a marriage where the sex was routine..."
Do you realize how intolerable that was? She had no choice but to go $crew strangers!"
I suspect this is just the NYC alternative lifestyle crowd to make infidelity not just shameless but to make infidelity MANDATORY.
In my experience things get better and better the longer we are married. I’d be willing to bet it’s the same for all couples who are unselfish and committed to each other until death.
The womyn on Sex in the City had much more adventure than “routine” sex. She had to keep up with the Janeses.