You generally have to trust the people you're dealing with. Would you share anything personal around an insufferably smug weasel like Omni?
I remember sitting in my cubicle one day when the girl next door (literally) comes over early in the morning, very bubbly because she got some on the weekend. And, she confided, she'd been introduced to anal sex, and loved it.
So yes, friends to share intimate stores. That doesn't necessarily mean graphic stories, of course.
Perhaps you haven't much to be smug about.