Perhaps there was a little pressure there, i.e. asking for her future plans, going to counselling (this is a no! no! for fogged up WAW's).
The hot & cold behaviour your are witness to, may perpetuate so long as you keep doing what you are doing! You've recognized before that you are obsessive of your W and that she loves you. You need to break this dynamic and the sooner you do, the sooner you will reach your goals.
For my $0.02 worth and it is just my opinion and my comments will surely be met with disgust by the matriarchs of this board, but man, go out and get yourself a date....better still get several until you find yourself a steady buddy.
It seems, and I have seen it too many times, that the light goes off in the heads of WAW's once they honestly realise what it is that they stand to lose.
You my friend, are a decent man that loves his family and for the effort that you are putting in, you are not getting the rewards. You know what they say about where good guys finish?
Suit
"It's better to have no spouse than have a bad spouse"