Vin Diesel Gushes Over 'xXx: Return of Xander Cage' Co-Star Nina Dobrev: 'You Can't Help But Love Her'

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Vin Diesel can't get enough of his xXx co-star, Nina Dobrev!

The 49-year-old actor took to Instagram on Thursday to gush about Dobrev, alongside a sweet photo of the pair.

WATCH: Nina Dobrev Rocks New Lob at 'xXx: Return of Xander Cage' Premiere in London -- See Her Fresh Cut!

"@ninadobrev has traveled the world promoting xXx The Return of Xander. She is so good in the movie, she killed it on this Global Domination tour... but the best thing about her is her loving spirit," Diesel wrote. "You can't help but love her. Thank you Nina for being a Baller on and off screen. Looking forward to the next one. #xXxThursdays."

RELATED: 'xXx: Return of Xander Cage' Review: Vin Diesel's Latest Is Very Fast, Very Furious and Totally Insane

Dobrev really has killed it while promoting xXx: The Return of Xander Cage.

ET caught up with the 28-year-old actress on the red carpet at the film's Los Angeles premiere last month, where she opened up about the "surreal" premiere, and even rapped to Sir Mix-a-Lot's "Baby Got Back."

See Dobrev's rapping skills in the video below.