I never have believed it is my job to make anybody happy except possibly myself. However I believe most MLCers have some pretty serious personality 'traits' that externalise their unhappiness and look externally for the source of their happiness.
They will go from relationship to relationship hoping to meet that 'magical' individual.
I am moving on, filing for divorce, like I said in my last post I am concerned that my STBXW will spend the rest of her life looking for that unobtainable person. A sad waste of an intelligent woman's life, when she could look inside for the reasons for her unhappiness and hopefully deal with it.
