Listen to ROOT she is very wise. My advice would have been similar, though not as eloquent as hers. If you want your R to change then make a change to yourself. If and when your H wants back in your M you will be in a much better place physically, emotionally, and spritually. Think of this time apart as a gift, use it to find and better yourself. Divert your focus and thoughts from the trashy bimbo that is hanging around your H to bettering yourself.
It seems like you are headed down the right path...Even though it is painful keep forging ahead.