Rex Features
In an interview with Cosmopolitan, the 'Bad Romance' singer explained that her partner had said that he wanted her to fail.
"I had a boyfriend who told me I'd never succeed, never be nominated for a Grammy, never have a hit song, and that he hoped I'd fail," she said. "I said to him, 'Someday when we're not together, you won't be able to order a cup of coffee at the f**king deli without hearing or seeing me'."
GaGa admitted that she had struggled to succeed in the music business, adding that she "ate s**t for so long".
"I've always been delusionally ambitious to the point where people don't understand me," she added.
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