Here's what you need to do. Talk to your W. She's at a place where it seems she would be sympathetic to your feelings. The reason why I say this is because too many times we see WASs here who were the LBS. They reconciled BUT held onto resentment or didn't know how to cope with it. The resentment built up in them like a cancer to the point where they felt justified when they had an A themselves or felt like walking out on their spouse.
Resentment breeds in the dark. Honesty and truth can shine a light on it. You just have to tell her how you FEEL and not place any blame on her. Do the "I FEEL HURT ... WHEN I FOUND OUT ..."
Your W is right. YOU need to open up again and to start trusting her. This is the next stage of Piecing.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.