No, you aren't crazy. If you are, we all are. The "affair fog" lasted 14 years for my WH. Now that the 14-year affair is over, he wants to work it out. All I can say is, "That is because you don't have someone else in line for another affair." That isn't what he says, but how can I think otherwise. However, through counseling and "Setting Captives Free" (a free program - http://www.settingcaptivesfree.com/),
there have been huge changes in my WH. Yes, there have been changes, but is it enough to forgive the affairs (yes, I said affairs with an "s')? I am not sure yet. Give your WH time, work on yourself, and hopefully, things will improve.
Surviving; I know what you mean when you have doubts about what he is thinking. That's part of the trust issue isn't it and it's difficult when you want to believe them but that nagging voice in the back of your mind is telling you otherwise. I imagine all kinds of different reasons he could give or other answers to questions. I'm glad the counselling is helping both of you though...