Your old M is over. Any future R would be a new R.
"(I am positive that he knows where I am in all this). "
Then try to get to a different place. He will be able to feel the emotional demands and pressure regardless of whether you keep your mouth shut.
The focus needs to be on you and you building a HAPPY INDEPENDENT LIFE on your own. You need to be OK by yourself. Quit worrying about an M that does not exist anymore. Focus on yourself and your own happiness. Leave having him be part of your life out of the plan.
