DP and I have never, so far, farted in front of each other (four years! Although we don't live together yet).
It started because before we started dating, he was a long term friend of mine, and often heard my rants about XH farting luxuriantly and noisomely all evening, every evening (it was truly gross, like a rat had crawled up there and died).
So DP decided that he wouldn't fart in front of me.
And my body decided it wouldn't fart in front him until he farted in front of me.
Anyway, this is all leading up to the real story:-
Sometimes I wear earplugs, when he's staying overnight. One morning, as I woke, I let rip with the most enormous bottom burp. I couldn't hear it, but I could feel it, iyswim and smell it.
I froze! Did he hear? Was he awake? Had I broken the ice, as 'twere, in spectacular fashion? Without any gentle parping lead up?
I still don't know, because DP, ever the gentleman, has strenuously denied that I ever fart in my sleep.
But I know better...