Kunihiko Hashimoto, then a 26-year-old insurance worker, attended a New York Philharmonic concert in Tokyo in 1979, and he went backstage afterward to meet Bernstein, soon to turn 61. They fell in love, and though Lenny was never one for monogamy, letters in Library of Congress archives show that they remained involved for the rest of Bernstein’s life. And the relationship became professional as well as personal. – The Observer (UK)