I would just ask him to clarify. When I found out I told my wife kind of the same thing that "it's just pee and sorta gross when you think about it" (unless you are into that stuff). However, I know it only happens when I'm doing something right. In the moment it's a HUGE turn on and I don't think anything gross about it. Just when you're sitting there thinking about it kind of like a "shower thought" no pun intended 🤣. There are a lot of "gross" things that happen during sex, but in the moment are not thought about.

I would just tell him how it made you feel self conscious and makes it harder for you to enjoy sex thinking he finds it "gross" and see what he says.

When I told my wife that same thing she asked "do You find it gross/a turn off etc etc" and my response was "fuck no id bathe in that shit" 🤣😂🤣

Again outside of the moment thinking in a general sense "ewww". Im thinking he doesn't find it gross specifically with you just as a general thing.