I don't think it is an affair. But I do think she is running and telling him everything I say or do. She is either against me or trying to help me. I just don't know.
I can't trust my sister. Wow.
This is one of the reasons why it is a bad idea to involve family; they tend to choose sides (usually behind you if it's your family and your spouse if it's theirs) and the more they see the dirty laundry being aired, the harder it will be for them to set it aside if you reconcile with your spouse.
So stop telling your sister what is going on. If she asks, just say that you're dealing with a lot and don't feel like discussing it right now.
