He was obsessed with her and had her always in his mind. There is a expedition in a Manhattan gallery called L’Amour Fou Picasso and Marie-Therese that features all his work that was inspired by her. How did they meet? He picked her up. Outside a Paris department store in 1927, she was 17 he was 45. His pick up line was that she had an interesting face. She did not know who he was. He was very seductive and a week later, she was his mistress. The media would go nuts over this today. Where is TMZ?
He requested this because he regarded her as his real wife and depicted her image in any woman picture he drew. 50 years after their meeting, Marie Therese committed suicide. For the muse, there was no living without the artist. Men got it made!