Be thankful and stop thinking of OW. That will eat you alive. Remember when you would do anything to just have him back and now what are you asking? It is the same thing of if only I made more money, well the more you make the more you spend.
I am so happy for you that you have him in the position you do, now move forward and budget yourself as you would your money. Stay positive and stay focused. Enjoy the times you do have. Know what power you have over the OW, cause it is extreme power, now learn to use it.