OAW, I have noticed that this is the first assumption that strangers make of a separation, especially non-married strangers. Even if your W has been having the so-called Emotional Affair, she got to that point for a reason; something about the dynamic of your R was off. That's why it's dangerous to listen to strangers opinions and advice. They don't know what happened between your four walls. They don't know your W as well as you do.
Even here, at the forum, you can hear all kinds of advice and I think that we here are less biased, but you still know better.
Keep doing your 180s. Keep surprising her and proving her wrong in her assumptions of you. AND keep a solution journal with what works and what doesn't.