MC,
You have lot to show for your efforts:

You haven't filed for D
She hasn't filed for D.
She really enjoying your company.
She went from avoiding you to wanting to hang out.
You are in the best physical shape you've been in a long time.
You are having a heck of a great time.
You are really opening up to your sons.

Look...the good point is you didn't snoop. Give yourself a pat on the back.

It's OK to have a crappy day. You emotions cycle through.

I think you are pouring on the niceness (coupons), etc a little thick. Back off a little. You need to apply and release pressure. As you told me, she mentioned that she appreciates HOW HARD YOU ARE TRYING. That might be it...you are trying too hard. She might feel like your efforts are still a ploy to win her back. After this concert thing you go to...ease off a bit. Yeah, have her come over for the birthday, but after that, ease off.

And if truth be told, you are still a little too worried about how she perceives your every little action.

YOU ARE DOING GREAT!!!! Relax. Give youself a medal and take a break from hanging around your wife. You don't live together, so take advantage of the space. Man, if I lived near you, I'd bring SuperDad and Husband over and we would rent movies and drink beer -- to heck with our dumbass wives.

Or we could invite some of our DB lady friends over for a real party.

--Theoden