Reading your story felt like my own. My H is having an unconfirmed EA as well. I know how hard it can be to live in the same house with the person you love and know that they are not feeling the love that you are.
I am trying most to follow the "act as if" principle. I am acting as if everything is ok and that everything will work out. Remember that the OM is helping your W feel good things about herself. Try working on being her friend first and being the person that she fell in love with so many years ago.
I hope that your time together will be good. Just act as if you are enjoying your life and hopefully you will make it true.
