Mariah Carey Lights the Empire State Building, Gets Close With Bryan Tanaka Onstage in NYC

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It's shaping up to be a very merry Christmas for Mariah Carey.

The 46-year-old singer had a great start to the week, kicking off her All I Want For Christmas Is You tour with new boyfriend Bryan Tanaka and flipping on the holiday lights at the Empire State Building.

WATCH: Mariah Carey Gets Candid on James Packer Split, Bryan Tanaka Romance: 'You Gotta Keep on Pushing'

The chemistry was undeniable between Carey and Tanaka during Monday's performance at New York City's Beacon Theater, as she checked him out mid-performance…

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…before he bolstered her up like the wind beneath her wings...

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…and the two shared a moment gazing into each other's eyes.

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WATCH: Inside Mariah Carey and Bryan Tanaka's Romantic PDA-Filled Day of Fun in the Sun

Carey and Tanaka seemed to take a little break from their love affair on Tuesday, as the pop diva flew solo to flip on the flights at the Empire State Building.

WATCH: 'Mariah's World': Mariah Carey Recalls 'Great Moments' with James Packer as Bryan Tanaka’s ‘Crush’ Is Revealed

But back to the two lovebirds, Carey and Tanaka also spent Sunday night together, cozying up at a screening for her new E! docuseries, Mariah's World. 

"Mariah's chemistry with Bryan was subtle, but undeniable," an eyewitness told ET. "It is the way they communicate. They seem so happy in each other's presence. They are on the same page -- their laughing and the glances between them."

Carey and Tanaka started dating late last month, after the singer split from billionaire fiancé James Packer in October.

See more in the video below.

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