Deb - things look good, congratulations! BUT, and this is a big one - do not put yourself down! Don't call yourself a fat slob, or boring, or predictable. The affair was not about you - it was about your H. That said, you can make changes in your health, in your weight, in what you want to do on a day to day basis (there is nothing wrong with being predictable a lot of the time, but its fun to do things different occasionally!)
Be regular in working out - take walks with your H, get strength training, do Pilates, etc. You can change your life from here on out if you choose to. But don't put yourself down!