The X Factor star, who releases debut single 'You Bring Me Joy' on September 2, said the boyband member isn't her type.
> Amelia Lily interview: 'I don't want to be the next Pink'
"I met all the boys through The X Factor," she told Now magazine. "[Niall and I] got papped together walking out of the studio.
"It wasn't about romance for me. The last thing on my mind at that time was going on a date."
Asked if they swapped numbers, she added: "Yeah. Sorry Niall. He's a nice guy, but not my type. I like dark haired boys."
Lily also said that she is "definitely not dating" Harry Styles.
Watch Amelia Lily's video for 'You Bring Me Joy' below: