I am putting my slant on your situation ( I am married 18yrs, I'm 42) however I have also dealt with an angry, resentful spouse with mid-life issues and difficulty expressing emotions. I also had concerns that another woman was in the picture ( never found evidence though). My advice: 1. Be prepared for an emotional rollercoaster 2. Be aware that your H's mixed emotions will last awhile 3. Focus on yourself 4. Don't analyze H 5. Go to MC 6. Make weekly plans for fun 7. Offer something wonderful...a happy home life 8. Stay strong...stay positive...expect confusion
I feel from your posts that you expect the situation to turn around quickly, and for your sake I hope it does (my H and I had a lot more time to screw things up).