Yep, I agree with Leed, you're a gem. It's good to see someone working so hard to right their mistake, and kudos is due where it is due. It's also hard to admit a flaw, as is realising that you didn't cherish her.

We all make mistakes, some bigger than others but we all do it. I do hope that your wife can muster up some forgiveness soon and let you both move on stronger and wiser. To keep punishing you for a year and beyond for a fairly average (and common) mistake seems to be verging on the harsh. Love is about forgiveness, just as you seem to be forgiving her for threatening to leave many times and never having sex again. Moving forward has to come from both of you, and you cannot make all the effort here.

hugs