'You mean tonight, boo boo?' Leonardo DiCaprio flirts with Jennifer Lopez by text on Carpool Karaoke

When Jennifer Lopez wants to "cut loose", Leonardo DiCaprio is there for his "boo boo".

You'll get exactly what we mean after seeing their priceless text message interchange during JLo's "Carpool Karaoke" segment on The Late Late Show with James Corden.

British host James Corden pored through the 46-year-old superstar's A-list phonebook including Demi Lovato, Bradley Cooper, Chris Brown, Cristiano Ronaldo, Dwayne "The Rock" Johnson, Iggy Azalea and Fergie.

James just had to text one celebrity – and he chose recent Oscar winner Leo. Here comes trouble…

Jen laughed, squirmed and almost left the car as James typed and hit send on this: "Hey baby, I'm kind of feeling like I need to cut loose. Any suggestions? Let me know, JLo (from the block)."

It didn't take long for Leo, 41, to respond to JLo's proposal. And it turns out he calls her "boo boo"…shall we start the #JLEO hashtag now, people?

Let's hope her boyfriend Casper Smart doesn't mind Leo's nickname for his JBoo.