Niall Horan Talks New Single 'This Town,' His Love Life, and Says One Direction Isn't Over

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Niall Horan surprised his fans on Thursday, releasing his debut solo single, "This Town."

The romantic, bittersweet tune is definitely in line with what One Direction fans might expect from 23-year-old Horan, but in a new interview with Sirius XM's Spyder Harrison, the British singer admits releasing new music on his own has been "nerve-wracking."

WATCH: One Direction's Niall Horan Calls Out Fan for Sneaking a Sleeping Pic on an Airplane -- 'This S**t Is Unreal'

"[It's] momentous," Horan says. "It kind of reminds me of when we [One Direction] released 'What Makes You Beautiful.' It's a big deal."

Horan reveals he wrote the track in March while backpacking through Southeast Asia. He says he didn't expect to release new music during One Direction's break, but found himself inspired.

"I wanted to kind of let people know that I was up to something, so they didn't think I'd just fallen off the face of the earth,” he explains. "That's the only song that's actually fully finished."

As for whether or not One Direction is breaking up for good, Horan definitely isn't closing the door.

"For the foreseeable, you know, we’re just taking a break and kind of doing our own thing," he shares. "But I definitely won’t rule that out because it's the best thing that One Direction has allowed us to do things like this, and I definitely won't rule it out. Our lives wouldn't be the same."

When Harrison joked about creating a hashtag "#nottheendofonedirection," Horan replies, "100 percent."

However, Horan is fully supportive of his bandmate Harry Styles' highly anticipated foray into acting. Styles, 22, is making his film debut in director Christopher Nolan's World War II film, Dunkirk, out next July.

"He seems to be good at it," Horan muses. "I don't think Christopher Nolan's gonna take on anyone that's not good at acting."

Lastly, Horan confirms he's totally single when it comes to his love life.

"Non-existent, currently," Horan cracks. "I've been busy sitting in studios, so I haven't had time for that."

WATCH: Justin Bieber and One Direction's Niall Horan Hung Out Together, and the Fans Almost Couldn't Take It

Last December, Horan sparked romance rumors with Selena Gomez, when the two got cozy at Jenna Dewan-Tatum's 35th birthday bash in Los Angeles.

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