She said: "He's a really, really great guy. We've hung out in New York a few times - where I live and where he was staying. We watched movies and chilled out - one night we watched 'Flubber'."
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Although she refused to confirm if they had kissed, Lily added she has been in touch with Harry while he is with his bandmates Liam Payne, Niall Horan, Zayn Malik and Louis Tomlinson on a tour of Australia.
She told Heat magazine: "It was definitely easier to talk when he was here. It sounds like he's enjoying Australia." Lily also claimed she did not know if he was seeing other girls - having been linked with the likes of Rihanna and Taylor Swift.
She said: "I don't know much about the other girls. I don't know what he's doing all the time when I'm not hanging out with him."