Justin Bieber's song about Mariah Yeater was inspired by Michael Jackson's Billie Jean.
The 'Baby' hitmaker has composed a tune for his latest album about fan Mariah's false claims he fathered her baby last year and Justin says it was inspired by Michael's similar but fictional account of a fan claiming he'd fathered her son.
He told We Love Pop magazine: "We definitely took inspiration from that song.
"I wanted to write something different and something the fans would be connected to and understand.
"I wanted them to think, 'Yeah that's Justin's life and he's talking about stuff that's really going on.'"
Justin also revealed he's not afraid to talk about his ordeal because people now know he was not the father after he took a paternity test.
He said: "I still just think, 'Wow, I can't believe that happened,' but it's not really hard to talk about because I know the truth. It's behind me. People know what the truth us as well.
"Before, it was all pretty shady because everyone was like, 'Is it true? Is it not true?' But now I think people know that it's not true."