Mariah Carey is "cautious" around James Packer.
Mariah Carey
The 'Without You' hitmaker is reportedly romancing the Australian billionaire but isn't quite ready to "let him in yet".
A source told E! News: "They are not talking marriage. That's ridiculous.
"She's enjoying his company, but she's also trying to remain cautious. This trip is a chance for her to really get to know him. She hasn't 100 percent let him in yet."
Meanwhile, the 47-year-old businessman has reportedly been courting Mariah - who has four-year-old twins Monroe and Moroccan with estranged husband Nick Cannon - for a number of months.
The 45-year-old star is believed to have been treated to a number of lavish presents including a room full of flowers for her hotel suite as well as travelling to Las Vegas to support her ahead of her Mariah #1 to Infinity residency.
Meanwhile, Mariah's ex Nick previously suggested there's a possibility of the couple reuniting.
He said: "It's one of those things, I'm a hopeless romantic too. Through this learning process, you never say never.
"To me one thing I know, that will always be the love of my life, always be my family and that's never going to change."
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