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.
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.