DEAR ABBY: A year ago, my husband confessed that he was having an affair at work. Before it started, he tried setting “Velma” up with his twin brother, but she said she wasn’t interested. Their affair lasted for months, until the guilt “ate him up.” When he told me, I was devastated. We agreed to get counseling and work on our marriage. Well, it turns out Velma was also seeing his brother while she was with my husband. Oh! And she had a baby, and we’re not sure who the father is. My brother-in-law claims he loves Velma and she loves ...