Old friends Cameron Diaz and Leonardo DiCaprio were spotted getting seriously flirty in Monaco recently.
The pair were in town for a Tag Heuer event at the Formula 1 Grand Prix and eyewitnesses could not believe the "crazy chemistry" between them.
Cameron, 40, was said to have been "practically mounting" Leo - oh these classy showbiz events.
After enjoying one another's company at the bash, they apparently decided to have a more private party of their own as they we seen "disappearing" to the 38-year-old actor's yacht.
An insider told Now magazine: "Cam and Leo have been mates for over 10 years. When they filmed Gangs Of New York, Cameron was with Jared Leto.
"But this time she was very flirtatious and Leo didn't seem to mind."
We imagine he wouldn't...
A source told Look magazine: "They've always been flirty. In Monaco they has a few drinks and were clearly enjoying themselves - at one point she had her hand on his knee.
"Then they disappeared to the boat and weren't seen or heard of until the next day."
The pair are rumoured to have shared a 'friends with benefits' style relationship over the years, but Cameron's pals are hoping she doesn't get any big ideas after this hook-up.
Especially as he was also recently linked to 20-year-old German lingerie model Toni Garrn, who was spotted with the Hollywood A-Lister in France.
A source told Heat magazine: "Friends have told her not to take it too seriously, as Leo had chemistry with Toni as well."
With a reputation and charm like Leo's, there are always bound to be a bevy of beautiful women around him.