Q: My wife and I just went to her 20th high school reunion. It was about the most miserable four hours I have ever spent. She was married to her high school sweetheart. They had three kids and remain friendly. People who saw them chatting figured they were still married and asked about their kids, their parents, their siblings. And there I was, standing around like an idiot. My wife rarely introduced me because, she said, she "didn't want to get into it." I refused to go to the picnic the next day, which started a huge fight. What's good ex-etiquette for class reunions?