Packer popped the question during a private dinner with Carey's close friends in NYC, reported TMZ.
Packer apparently got down on one knee and proposed to her with a 35-carat diamond ring in front of her close friends during a private dinner at Eleven Madison Park, NYC on Thursday night, January 21.
No wedding date is set just yet. The couple has not confirmed the engagement yet but if and when it does, this will be a third marriage for both the R&B diva and the businessman.
The insider added, "As soon as their friendship turned romantic, they have wanted to spend every moment together."
Carey was previously married to Tommy Mottola and Nick Cannon. She has two children, four-year-old twins Moroccan and Monroe, with Cannon.