If my sibling was cheating on his spouse I wouldn't say anything to the spouse. I would, however, smack my sibling upside the head and ask them what the hell was wrong with them. The kids don't need to know how stupid their dad or mom is. Keep them out of it.

As far as the resident bitch goes, does this surprise anyone?

My husband and I use sex toys as part of our personal entertainment. What does that make me?