no, I simply don't get it.
what you mean she grabbed your cock? didn't you have pants on in that occasion? it looks like something dodgy took place but you don't want to tell us. It's sort of worrying cause the base of a marriage is to have no secrets whatsoever, that's what my parents thaught me.
Lol, of course that's not what happened to me. It was just the first thing that popped into my mind.
My examples never got to the intimates.
Of course there can be no secrets, but it's not a good idea to create irrelevant discussions when nothing happened. My wife is usually extremely curious, and once she gets started, hours will be wasted with questions going nowhere. After which, she'll be tracking down the women in cause using her "special powers" for their version.
So yeah, even if I would be truthful, she will do what all women do, she will not trust me to have been completely truthful, and will want to make sure. Stability depends on honesty, yes, but also on marking out irrelevant events.