This is actually something my husband and I talk about on a regular basis: balancing our urge to share with respecting the other person/people involved and their privacy.
Luckily, I am mostly involved with people who are perfectly happy with me sharing whatever I want. In fact, they have started working together to push my boundaries when it comes to some kink stuff (something I have been wanting to do for a while anyway, but it somehow seems easier with 2 people encouraging me).
I'm comfortable not knowing, as well, if there are people involved who don't like details shared. Like someone else said, as long as I am made aware when a relationship becomes sexual and that all rules/boundaries are being respected, I'm good to go. Anything else is just icing on the cake