HWA, you are not moving ahead. You stated that you are "simply not happy without wife"
You can be. You've made a choice not to be. You've made the choice not to move forward for you. Not to look at all the options you have.
Do we all love our spouses? Yup. Do we want an R? Most of us, yup. Do we realize that we are going to have to be okay with the fact they may never come back to us? That is the journey.
You can love someone, be unhappy without someone, it doesn't change their mind and only affects your actions.
When are you going to start being happy for you? And your sons? Live where you fear to live HWA, the first step is the scariest and the most exhilarating.