I work in a school. I discovered last week that the head teacher (M, married with children) is having an affair with a younger (F, single) TA, who is a very good friend of mine. Another colleague spotted them kissing on school grounds. She told me as she knows I am close to the TA, and has assured me that she has no intention of telling anyone else. A few eyebrows have been raised recently about the amount of time they have been spending together, but I just put it down to idle gossip. Now that I know, I can see that they are spending a lot of time together in his office, and he seeks her out at whole-school events, it's not very subtle!
I have stressed over this for the last week and just can't decide what to do. Part of me thinks it's none of my business, they are grown adults capable of making their own decision. But part of me wants to warn her that people are starting to gossip, and now they have been seen together. I also worry that she is in a vulnerable position, a lowly TA having an affair with the head teacher. If the shit hits the fan I fear it will be her that takes the brunt of it. Should I tell her or keep my mouth shut??
YABU - none of your business, stay out of it
YANBU - you owe it to your friend to warn her before it becomes common knowledge