sentences:  Carly Simon had a personal relationship with Armstrong until around 1971.He is the subject of the song "Dan My Fling" from her 1971 debut album and has been reported by some to be the subject (or one of the subjects) of her 1972 song "You're So Vain".In 2010, in relation to a suggestion that David Geffen was the subject of "You're So Vain", Simon stated that when she released the song she had not yet met Geffen.