Bright, You still love the man he once was. You love him, but you don't love/like his behavior. I get that.
Right now, you are still doubting yourself, therefore, you do nothing. BTW, no, you are not crazy. You are still here because you are still sorting through the grieving of a marriage that has died and you are still looking for answers. Some of the answers are slowly coming to the surface, i.e., his behavior and the things he's doing now which are the exact opposite of the person you knew. Some questions that you have, you may never get the answers to them and closure w/a MLCer doesn't always happen.
Bright, you will know when you've had enough. No one can make that decision for you.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.