My wife (F) and I (M) have been married for 13 years. Our sex life is very normal for people our age (40s) in terms of frequency, satisfaction, etc. We're very comfortable with each other, our bodies, etc.  I've expressed my interest in pee to her in different ways over the years; both subtle and occasionally not-so-subtle. But it's never been part of our sex life together. She's not interested in the topic, or pursuing it sexually (e.g. as a kink). In fact, for a long time she "kink-shamed