GTO, thinking about you. These times will come and go.
Sometimes getting out of the house, or being with people, or even exercise won't help. And that's okay. Allow the feelings to be.
I know how you feel. Why do you think I continued trying to save my M for three years? I was even willing to overcome one of the things I thought were deal breakers (the affair.) But think about this: your H is doing what he does bc it's all he knows what to do. He feels disconnected from you, his children, and probably himself. So send him love...This helped me.
Finally, take some action: 1) Get out the role of the abandoned one. Don't feel like a victim anymore. 2) GAL-seriously, not just the sports in the weekend, but something really different. 3) Reach out. Connect with other people--new people. 4) Write down your 180's and put them into practice. Ask yourself how you can be a better person/wife.