Help! My Brother Is Having an Affair. I’ve Gotten Perhaps … Too Involved.

Dear Prudence Maybe I can get away with it. Aug 04, 202611:23 AM Photo illustration by Slate. Photo by Mariia Vitkovska/Getty Images Plus and OlekStock/Getty Images Plus. 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. For this edition, Tony Ho Tran, a Slate senior editor, will be filling in as Prudie. Submit questions here. (It’s anonymous!) Dear Prudence, My brother “Walter” finally came to his senses about what an awful person his wife “Desiree” is and started seeing another woman on the side. He can’t leave Desiree for financial reasons right now, so I’ve been letting him use the vacation condo my wife and I own so he can see his S.O. in peace. The thing is, I haven’t to