The Without You hitmaker - who is in the process of divorcing from Nick Cannon - was spotted holding hands with James Packer as they enjoyed an "extended vacation" in Capri, Italy.
The Hero singer shared snaps of the vacation on Instagram, showing what a good time her and her four-year-old twins were having...
The new couple reportedly met through their mutual friend Brett Ratner, according to gossip website TMZ.
Whilst Mariah appears to have moved on from Nick - with whom she has four-year-old twins Monroe and Moroccan - the America's Got Talent host previously admitted that he would "never" rule out getting back together with Mariah.
Discussing if the pair could get back together again, he said: "Um, yeah, you can never say never."
It was previously claimed that Nick had asked for $30m in their divorce settlement.
An insider said: "Mariah was willing to give Nick $10m but he said 'hell no' and demanded $30m. Mariah says it is what they agreed to in the prenup before they got married.
"Mariah told Nick nobody cares what he has to say and told him to take it or leave it because that's it - not a penny more. He says she is being unreasonable so he has to do what he has to do."