So, I'd like a more general audience than I've been having for my BIL.
So his wife has been having an emotional affair with one of her exes from college. She is a consistent liar about what shes doing and if they are still talking. They had a 7 hour dinner and she lied about it. They eventually had a heart to heart and are going to therapy but she will not cut off ties. Im there for this guy but I keep telling him I would have been gone a month ago (its been about 3 months of her lying). I dont believe her for a second that it hasnt gotten physical although she claims it hasnt. From my perspective, our family acts like nothing is going on, except me who makes it super awkward. I cannot hear her talk without laughing or making a comment. I cannot coexist with her knowing what shes done. My BIL and I have become best friends over the last decade or so. I honestly dont believe in the whole cheating thing and it drives me up a wall.
Bottom line, am I out of line? Is my advice bad?