Jennifer Lawrence, Chris Martin Spotted Together After Vegas PDA

It seems things between Jennifer Lawrence and Chris Martin are heating up, with the pair being snapped together making their return to Los Angeles by private jet.

The sighting comes following reports that they were 'all over each other' at the iHeartRadio Music Festival in Las Vegas at the weekend - with snappers even catching them backstage at the event.

A source told US gossip website RadarOnline.com: "At around 7pm on Friday night, Jennifer and Chris were making out backstage in an area that only allows security and a select group of celebrities in.

"She had her arms around his neck. They were kissing passionately before he took the stage!"

They added: "Jennifer was watching from backstage and looked like the proudest girlfriend in the world!

"They spent the entire weekend together. They were not trying to hide it at all."

The Hunger Games actress is thought to have hooked up with Chris following her split from actor Nicholas Hoult in July, while the Coldplay frontman parted ways from wife Gwyneth Paltrow in March.

Reps for both J-Law and Martin are yet to comment on the dating reports.