In listenting to the NPR item I was taken by the story.  I first found interesting the age difference in the topic characters.  I wondered how these two had crossed paths.  One is a famous artist and one unknown.  It appears that they love of the art drew them together.  The relationship develops out of that love for a common topic.  Over the years they begin to find that they want more than a "business" relationship and this is where the issue begins.  You here this in the news today.  Stars in Hollywood are drawn to each other during a filming or prooject they work on togther.  That is not reality and rarely does it work long term.  While the attraction of people is often a result of a common interest, that cannot be the sole purpose for getting together.  The age difference obviously came into play in this relationship as O'Keeffe was young and still wanted some of the things in life that Stieglitz had already experienced.  It is no wonder that O'Keeffe needed to go off and find herself after some modest fame.  It is ashame that the relationship seemed to fail as she became famous and almost seemed to not need him.  I had never heard the name of these people before but was intrigued by the article and want to learn more about the works of them both.