DEAR ABBY: I am extremely upset. My son got married a year ago. We were very happy and have welcomed his wife into our family. He met us for lunch yesterday and announced that he and his wife have a polyamorous relationship. They will stay married, but both of them will date and have long-term relationships with other people. My husband and I are in shock. We have been married for more than 30 years and have always been faithful to each other. We thought we had set a good example. They are asking to be able to bring other boyfriends ...