I wouldn't expect any radical change. While it is possible that you will both have a revolutionary breakthrough, it seems like the success stories on this board take a little while and you are going to have to stick with it for a while.
I think in my case, if my wife suddenly did a 180 and starting not only not rejecting me, but started initiating, I would be suspicious (smiling, but suspicious) that there was another motive and it wasn't going to last. I think it would take a while before the years of resentment were truly wiped clean.
PF
Me; 42, W; 43 M; 16 yrs S12, D9
3/13 - "I want to move to XYZ City (four hours away) and it might be without you, not sure" 5/13 - "Not sure I meant that"