In the summer of 1940, when Anne was eleven years old, she fell in love with a boy named Peter Schiff who had recently moved to Amsterdam from Germany. He was three years older than her and they ran around the neighborhood holding hands that summer. A few years later, while in hiding, Anne often thought of him and wrote about him. Later, she died in Bergen-Belsen concentration camp and he died in Auschwitz concentration camp.
    Until Sunday, the public had seen no photo of Peter, but a man in Britain realized that his good friend, when he was a boy in Germany, was Anne's lost love. The man, Ernst Michaelis, donated a nice photo he had of Peter (shown above) to the Anne Frank House. In 1939, Ernst was about to be sent to England for safety by his parents (via the Kindertransport program) while Peter left Berlin for Amsterdam with his parents. As the two friends parted, Peter gave Ernst the photo. The inscription says: "In friendly remembrance of your friend Lutz Peter Schiff." Above, I also put a photo of Anne (from the summer of 1940).

• The ABC News page about this includes a large photo of Peter.
  
• Another informative news article by The Guardian's Observer magazine.
  
• The Anne Frank House website has an article which includes more photos (unfortunately, not in English at the time of this writing).