The One Direction singer spent a lot of time with 17-year-old Ali McGinley during a trip back home to Mullingar, Co Westmeath, Ireland, over the weekend and though she didn't confirm their relationship, the brunette beauty admitted she and the pop star are "very close".
She said: "He genuinely may be one of the nicest men I've ever met. We're close."
Quizzed on twitter about whether she and Niall are dating, Ali would only say the pair are "happy campers".
She wrote: "I can confirm that we're both happy campers, nothing less nothing more x".
A few months ago a One Direction exposed account spilled the tea on these two. Interesting how it turned out to be true.
In a 30-second preview of the release, the guys gather around a lime-green couch onstage and sing their Up All Night mid-tempo love song "More Than This." In the clip, the guys belt out the song about unrequited love while fans in the audience sway in tune. The teaser premiered on "Entertainment Tonight" Wednesday evening, and the full clip will officially debut Thursday afternoon.