My wife and my friend never told me about it at first. I was suspicious only since they were flirting (right before we end up together)

At that time we were nothing, tho we always had feelings.

Anyways the thing was that there was a party at a friend's house were they meet (i was traveling the world at that time) and I knew they were flirting but never thought he would be his first time. It was a friend who told me she was flirty dancing with him and grabbed him to the bathroon. They closed the door and by accident someone opened it and watched her, knees on the floor, his pants down while she was licking his tip. That's how explicit my friend told me until this day I imagine somewhat of it and makes me a bit jelous.

At this point by the way I was on my mind convincing me that I was not bothered since we were nothing and that was it.

But he then told me after that, they were still kinky and at some point dissapeared again. Everyone wondering where were they, my friend went room by room until found the one locked up, and only could hear moanings.

I was jelous but I could not complain at that time. And to this day that we are married both have never told me about it.

Wonder if I really should ask?or just let it be and go...