Hmmmm.. I don't think the other party needs to read PM for it to be useful. PM is all about one's OWN actions and OWN self, about owning one's OWN sexuality and happiness, about detachment that makes room for real intimacy. I recommend it to people who aren't in any R at all. I got interested in it myself when I was alone.
But, you really seem to be getting it Doc. Very promising this: "I know it will help ME with my next partner if it will be my wife or not." !!!