Watch James Corden go busking with Demi Lovato and Nick Jonas for #CarpoolKaraoke

James Corden has teamed up with Demi Lovato and Nick Jonas for another Carpool Karaoke – and things got very personal. The two singers candidly discussed their love lives with host James, with Demi revealing a little bit too much about her best friend's former romances.

The Late Late Show presenter James, 37, got straight down to business, confirming that 23-year-old Demi had dated Nick's brother Joe in the past, while Nick was dating her close friend Selena Gomez.

James Corden was joined by Demi Lovato and Nick Jonas for the latest Carpool Karaoke

But Nick, also 23, didn't expect Demi – who he has been friends with for 10 years – to reveal how he struggled to choose between Selena and their fellow former Disney star Miley Cyrus.

Demi said: "It was Cyrus, Gomez, Cyrus, Gomez and then I don't know what else happened."

James didn't let Demi off that easily though, and quizzed her on whether or not she'd ever had feelings for Nick. Referencing her current boyfriend Wilmer Valderrama, 36, she casually responded: "I don't know if you notice, but I kind of go for older guys."


Selfie or it didn't happen

Of course this is Carpool Karaoke so they worked through some of their biggest hits with James, including Demi's Heart Attack and Stone Cold, and Nick's Chains – which led to a risqué revelation from him.

He said: "I performed at a gay club once and they literally chained me to the wall as I performed the song. It's so hard to perform, though, without being able to use your hands."

At one point, the trio left James' car to perform Demi's Confident on a Hollywood sidewalk – using a guitar and some make-shift bucket drums, much to the appreciation of passers-by.

While we love Demi and Nick's Carpool Karaoke, it doesn't beat Gwen Stefani's from earlier this month… when she was joined by actual George Clooney and Julia Roberts. Watch the video and let us know your thoughts below!