Sign up for the Slatest to get the most insightful analysis, criticism, and advice out there, delivered to your inbox daily. Dear Prudence is Slate’s advice column. Submit questions here. Dear Prudence, I am a gay man in my mid-30s, and I’m engaged to a wonderful man who is truly amazing in every way. He recently told his parents that we are engaged, and they did not take it well at all. I knew th...