New Boyf For Kirst?

Kirsten DunstSo Kirsten Dunst is cruising...

And Josh Hartnett is on board.

Or that's how the ever-speculative Celebville gabfest would have it, anyhow.

Yup, those on the inside track say the temperature is rising between the two Hollywood actors, after they were apparently spotted getting it on together at the Sundance Film Festival.

Kirst and Josh seemingly made no secret of their mutual affection at a performance by music group Camp Freddy in Park City, Utah.

A inside source told People the duo "were making out like crazy".

It's yet another splash of mud in the ever-murky gossip waters surrounding both Kirsten and Josh's relative love lives.

Josh HartnettAfter a enjoying a high profile yet short-lived fling with Razorlight's Johnny Borrell last year, Kirst is said to have been cosying up with surfing pro Kelly Slater.

While Josh has been recently linked to Hollywood hotties such as Rihanna and Scarlett Johansson.

But if the latest rumours are to be believed, that's all water under the showbiz bridge now.

Who knows? We'll keep you posted.