Just so I'm clear, you're okay with your W having the opportunity to carry on an EA in your house, around your son, while you have no way to verify or know where you really stand in your M? You're okay with her putting up walls of secrecy between you, while leaving the door open to cheat on you AGAIN?

BTW, she was nice to you because you caved. You told her what you need, she said you were controlling and acting like her father, and you backed down. She gets to carry on without worrying about you finding anything, and you get to feel good for the rest of the day until tomorrow, when she tells you that "nothing's changed".

Sorry to be blunt, but most of us here have ridden this train before, and know where all the stops are...