The pair allegedly met backstage at one of the boys’ concert and began seeing each other secretly over the course of several months.
“Niall has been secretly seeing Zoe for a couple of months after he met her backstage,” and insider said.
“She’s a Dubliner but is based in London to work on her modelling career. Zoe’s travelled all over the UK to meet up with Niall on the band’s tour.”
And it’s thought that things between Niall and Zoe are getting pretty serious, with the 1D lad inviting her to his hometown of Mullingar to meet his family at his brother’s wedding.
“The biggest sign he’s really serious about her is that he introduced her to his whole family at his brother’s wedding,” the insider told The Sun.
“Zoe’s the first gilfriend Niall has brought back to his hometown of Mullingar since making it big, so it was a big deal and the talk of his family at the wedding.
Fans recently spent the night at Heathrow Airport to catch a glimpse of the band
"Niall’s protective of her as she’s shy, but his family all really took a shine to Zoe.”
Meanwhile Zayn Malik’s missus, Little Mix’s Perrie Edwards, has been speaking of what a great boyfriend the pop star is.
Below: Tom Meighan's best quotes: One Direction to the Tories