Niall Horan Says He'd Marry Selena Gomez During 'Carpool Karaoke' With One Direction

James Corden's SUV got a little crowded Tuesday when the boys of One Direction joined the Late Late Show host for a revealing installment of Carpool Karaoke.

With Niall Horan riding shotgun and Liam Payne, Harry Styles and Louis Tomlinson kicking it in the back seat, Corden led the band through the streets of Los Angeles -- and had them play a slightly modified version of the game of "Shag, Marry, Kill."

In his game of "sleep with, marry, go on a cruise with?" Corden gave them the options of Selena Gomez, Demi Lovato and Tina Fey.

WATCH: Selena Gomez Fuels Niall Horan Dating Rumors by Supporting One Direction Over Justin Bieber

Horan, who has been romantically linked with Gomez in recent weeks, admitted that he would marry the 23-year-old singer.

The real surprise came when he said he'd sleep with Fey and go on a cruise with Lovato. But it's probably nice to hear he might have some long-term aspirations for his rumored relationship with the "Good for You" singer.

WATCH: Jason Derulo and James Corden Take Over a Star Tours Bus in Hollywood for Epic 'Carpool Karaoke'

Aside from playing games, hollering their own songs at the top of their lungs and waving to shocked, overjoyed fans in neighboring cars, Corden and 1D also decided to choreograph and film a music video -- all while driving in the car.

Showing the guys what he's looking for in regards to synchronized dance moves, Corden momentarily became the fifth member of the band while they filmed the first-ever music video for their song "No Control."

Afterwards, Corden got emotional talking about the band's upcoming break, explaining, "I think you should rethink this hiatus."

WATCH: One Direction Sets the Record Straight: 'We're Not Breaking Up'

"Is it just me, or does this feel right?" a tearful Corden asked, referring to his status as a new member of the band. "I just feel like we've really hit upon something unbelievable."

Unfortunately, it doesn't look like they will be reconsidering their break, but they do seem to have some apprehensions.

"Well obviously, it's quite, like, a scary thing," Payne shared. "We haven't really stopped for five years. But I think, more than anything, were going to miss being on stage and stuff. But we haven't seen our families. My mom and dad are actually coming to live with me for a little bit, which is nice."

WATCH: James Corden Reveals His Dream Carpool Karaoke Guests

"It's going to be interesting for all of us," Tomlinson added. "It's going to be interesting to see what each of us do as individuals throughout the break. I think it's going to be cool."

Recently, Corden took another pop-star (who also has a past with Selena Gomez) for a ride when Justin Bieber got in the van for a second round of Carpool Karaoke. Check out the video below for a look at the "Sorry" singer's hilarious Late Late Show ride-along.

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