Roy Trakin May Fung Lee Pang will be 72 in October, but was barely out of her teens when she boldly entered Apple’s New York offices, lied about being able to type, and secured a job at the Beatles’ multimedia company.

She would soon become famous for a much more intimate tie to the group than that, as her very public 18-month affair with John Lennon in the mid-’70s is still a subject of great fascination to his fans, 50 years later.“Music was my passion,” explains the Spanish Harlem-born author and subject of the upcoming documentary, “The Lost Weekend: A Love Story,” premiering at the Tribeca Film Festival for a sold-out show on June 10. “It was something I loved.

I had no real abilities,” she admits of getting her start at Apple, “but answering the phone was easy enough. My mother used to tell me, ‘You have a mouth.