I’ve Finally Met My True Sexual Soulmate. There’s Just One Problem: I’m Already a Part of Her Family.

How to Do It Well, this is awkward. Aug 01, 202612:00 PM Photo illustration by Slate. Photo by DGLimages/Getty Images Plus. Sign up for the Slatest to get the most insightful analysis, criticism, and advice out there, delivered to your inbox daily. How to Do It is Slate’s sex advice column. Have a question? Send it to Stoya and Rich here. It’s anonymous! Dear How to Do It, My sister-in-law “Deonna” and I have been having an affair for the last six months. This began when Deonna called for my wife “Quinn,” but she wasn’t home. She sounded a bit upset and I asked her if anything was wrong. At first she was reluctant to tell me, but with a little urging, she revealed that she was annoyed about the fact that her husband refused to go down on her. I laughed and said she wasn’t the only one frus