You seem like a really great guy and an awesome Dad. I have posted some similar opinions on your thread in the past.
First there is scientific merit to your limerence theory. The problem when it does wear off and the relationship starts to fade there are no guarantees she comes back to you. I feel your story is like a Sandra Bullock movie. That if you just stand for your marriage and show her how much you love her she will run back into you arms.
When in reality she's thinking after all the horrible things I have done to this guy, he still wants me back. What is wrong with this guy? Does he not love and value himself enough? I hate to say it because I really like you but her and AP/LO are going to get a good laugh about it.
"I will never file for D" definitely shouldn't have been said. Yes, it does start the clock all over again.
Please read Accurays threads he has great insight on valuing yourself.
