["I learned today that my friends wife had an affair with his brother.  I'm beyond flabbergasted.", 'Wow! How can someone do that to someone with someone so close?', "I don't know.  I thought I knew who she was, obviously I don't."]
That's such a shame. And shame on his brother, too!
My best friend found out that his wife had an affair with his brother.  I am beside myself right now with anger.