Mariah Carey's fiance James Packer caught groping her on the dance floor

Things definitely got handsy!

Mariah Carey and her fiance, James Packer, were spotted boogying on the dance floor in an Italian nightclub earlier this week -- and it's clear their chemistry is off the charts.

Billionaire Packer was spotted groping his ladylove as he let his hands slide over her body in view of the public. The duo cuddled and canoodled as they danced around and Mariah sipped on a cocktail. Mimi was also spotted flashing her gargantuan engagement ring.

The duo, who are reportedly planning to wed later this year, couldn't keep their hands off each other for the rest of the night and have definitely been enjoying a flirty summer. Earlier in the week Mariah posted a super sexy video on her Instagram where she was flashing her man -- or the camera. The "Butterfly" singer is wearing a robe and then she opens the robe to reveal flashy, gold bikini.

They've also been cruising around Europe on Packer's yacht. The pair recently snapped a photo on the deck of the yacht where her billionaire fiance is staring longingly at a scantily-clad Mariah.

Let's be real -- these two definitely have the hots for each other!