Please do some internet research on the subject and consider counseling if you can, at least for yourself for now. I am certain that your marriage changed after that in many ways.
I see it was about 5 years ago, but if it's not been addressed by a qualified professional, I think it could do no worse than give hope to your marriage.
This is not an apples to apples comparison, but I will tell you this. I sought counseling for myself when my wife did not want to go, and here we are a few months later and she has also started seeing a counselor (separately and a different counselor). My point is it could be an opportunity for you to lead the way.
