Pretty arrogant of you to think you know how every man is suppose to react when he finds his wife is cheating on him. Why can't you just support him. You know the L P Support G. Or say nothing.
Honestly the number of times on this site where guys call other guys liars just because something has not happened to them or because that is not the way they would react makes it sounds like so much maliciousness.
Go find a safe space if truth is too uncomfortable for you.
Telling people what they want to hear is not support. Telling people what they need to hear is.