Is OTHER wrong in the post ? POST : My boss drunkenly admitted to me and my partner that he has been sleeping with our work friend’s partner. My partner and co-worker (WF) work in one department and I am in another, they do not report to my boss. My boss has half-truthed to WF that it happened one time, but admitted to my partner and I that it has been an ongoing thing. 

I want to tell WF the whole truth but I’m worried about retaliation from my boss. He has assured me nothing will happen to me, and he doesn’t seem like a vengeful person but you never know what will happen when emotions and stress run high. We are a very small business and my boss will almost surely be fired for this. He has also made suicidal comments to me before so I also worry that if things blow up that he may go as far as hurting himself, but I’m also aware that it’s possible he’s made those comments to manipulate me into staying quiet.

My partner has offered to tell WF the whole truth so that I don’t have to fear retaliation since he doesn’t report to my boss, but that also means waiting until they see each other again. I’ve seen WF twice including today since I’ve found out, and I can’t look him in the eye. My stomach knots when he talks to me. 

So WIBTA to speak up? Or is it none of my business? We all know what tends to happen to the messenger. 