EXCLUSIVE: Mariah Carey 'Traumatized' Over James Packer Split

Plus, is Mariah Carey sending a message through her engagement ring?

Despite Mariah Carey's multiple public outings since splitting from her billionaire fiance, James Packer, the singer isn't doing as well as it may seem, a source close to the GRAMMY winner tells ET.

Carey turned heads hitting the town in sexy, cleavage-baring outfits on both Thursday and Saturday night, where she was accompanied by her backup dancer, Bryan Tanaka. The source says the "Vision of Love" singer is currently "putting on a brave face."

"Mariah is traumatized by all of this but is putting on a brave face," the source adds. "She never meant to fall for James."

WATCH: EXCLUSIVE -- Mariah Carey and James Packer 'Very Unlikely' to Work Things Out

On Sunday, Carey took her 5-year-old twins with ex-husband Nick Cannon, Monroe and Moroccan, to Jessica Biel's kid-friendly restaurant, Au Fudge, in West Hollywood, California, still sporting her 35-carat engagement ring from 49-year-old Packer. However, she noticeably switched the ring from her left hand to her right, and certainly didn't seem to mind showing paparazzi cameras.

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Carey's rep exclusively confirmed to ET last Thursday that the 46-year-old singer and Packer were on a break after getting into a fight during their vacation in Greece last month. A source later told ET the two had broken up, and are "very unlikely to work things out." The source also noted that Tanaka is not the cause of Carey and Packer's relationship troubles.

"The backup dancer and Mariah are just close friends," the source explained. "He is not a reason for any issues between Mariah and James. It’s no secret that Mariah loves having a big entourage around."

WATCH: Meet Bryan Tanaka, Mariah Carey's Sexy Backup Dancing in the Middle of Her Split From James Packer

An eyewitness told ET that Carey arrived with Tanaka in her Escalade at celeb hot spot Catch LA on Saturday, this time, leaving her engagement ring at home.

"Mariah was in a very good mood," the eyewitness said, noting they didn't see any PDA between the pair. "She seemed like she wanted to be seen with Bryan Tanaka."

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