Speaking during MTV special 'Inside the Outside', which commemorates the 10th anniversary of the 9/11 terrorist attacks, she said: "I watched the towers fall from the roof of my school, holding all my best friends. I don't know ... just, my affinity and my love and the relationship I have with New York City - it's like the husband I never married.
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I wrote so many songs on this new album about New York City. I mean, every song on all my albums has some relationship to New York City, but one in particular 'Marry The Night,' that record is about my husband, New York."
The 25-year-old singer - real name Stefani Germanotta - recently claimed she was "married to loneliness."
Lady Gaga said: "I am an artist. We wallow in loneliness and solitude our whole lives in search of the answer to hundreds and millions of questions that run through my mind.
"Yes, I'm lonely. But I'm married to my loneliness."