However, she subsequently refused to rule the theory out, but admitted it's "unlikely".
The One Direction star has previously dated a host of famous women, including Kendall Jenner and Taylor Swift.
But the dark-haired hunk has also admitted he prefers to address his relationship heartache in his music, rather than discussing it through the media.
During an interview earlier this year, Harry explained: "I've never really felt like I've had to explain my personal life. And I love that with writing, you get to wrap it up with a song.
"I understand that people will dissect stuff like that, which is amazing, that people care enough about you to try and figure out what it means."
Harry also revealed he can happily write a love song without focusing his attention on anyone in particular.
He shared: "The fun thing is, you can write a love song that's not always in the traditional sense - it doesn't always have to be romantic or even about a person at all, if you don't want."
-Bang! Showbiz