Moreover, Mariah, 46, reportedly tired of footing the bills for Bryan's designer clothing, watches and chains. She is said to have felt that Bryan jumped in after she split from Packer and his endgame was fame. But they haven't seen each other since March.
The Daily Mail also recently reported that Mariah, who likes to be spoiled when she's in a relationship, was giving Tanaka $25,000 a month to buy her gifts.
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After being engaged to Australian billionaire James Packer - who would reportedly shower her with expensive presents regularly - sources told Life & Style magazine she "wants the same treatment from Bryan" and "she doesn't care that he's using her money to do it".
MailOnline has approached a spokesperson for Mariah Carey and Bryan Tanaka for comment.
Mariah shares five-year-old twins with ex-husband Nick Cannon, whom she wed in 2008, but later split in 2014.
She moved on to billionaire James Packer, whom she announced an engagement in 2016 and then soon called it off.
But she wasn't alone for long. Just four months after the split she officially confirmed in February that she was dating her backup dancer Bryan, who is 13 years her junior.
Speaking to the Associated Press, Mariah referred to Bryan as her 'boyfriend' while explaining her reasons for not discussing her personal life in the media.
She said: "I really don't talk about my personal life because that's what I used to do and it really worked for a minute, back, a while ago.
"I just don't feel comfortable talking about my personal life... Me and my boyfriend don't want to do that."