This is where you get frustrating because you keep asking the same questions.
Of course she's happy! She gets to go off to be with her boyfriend leave you taking care of the kids and grocery shopping and then comes home and plays house with you.
No one will ever do or say anything to you that you don't allow them to. You are allowing her to do this to you. Why don't you start packing her $hit up and moving it into the garage? Why don't you file for divorce? You're too busy trying to not upset her. Every marriage has deal breakers. What are yours?
I am really not sure we can help you Hurt. You have to participate in your own rescue.