Paris Hilton & Jared Leto: Gruesome Twosome?

Paris Hilton has been pictured in a passionate clinch with Jared Leto.

The heiress  - who is at Sundance promoting new movie The Hottie and the Nottie  – was snapped getting physical with the actor at Hyde Lounge at Village at The Yard in Park City, Utah, on Monday night

But this isn’t the first time that the hard-partying singletons have locked lips, say insiders.

A source close to the gruesome twosome tells PageSix: "Paris and Jared are not dating seriously, but this is not the first time they have made out — there just weren't any cameras around before."

"She likes him and she thinks he is really sexy and fun."

Life & Style reports that Paris has made it her mission to pull Jared - whose many ex's include Cameron Diaz, Scarlett Johansson and Lindsay Lohan - and wasn't put off by his initial lack of interest.

“She started giving [Jared] a lap dance (on January 19 at Tao), " a partygoer tells the mag.

“He was uncomfortable at first, but he started to enjoy it. By the time she leaned in to kiss him, he was all for it.”

A match made in celebutart heaven!