Thankfully that "other" Sue at the concert wanted nothing to do with him
Sue, I love you and our H's are sooo similar, but you are way missing the point here. Who cares what that woman wanted or didn't want. Your H approached HER. If she approached him, he should have kept walking, even with the state of your marriage right now, out of respect for you.
PS: Why are you home!??? Get out tomorrow night. Don't come home from work at all. Take advantage of this time!