Lindsay Lohan is dating Heath Ledger, it has been reported.

The "Mean Girls" star - who split from her snowboarder boyfriend Riley Giles last week - is said to have enjoyed a number of late-night sex sessions with the Australian actor after meeting him at New York's Beatrice Inn over Thanksgiving weekend.

A source told Australia's New Weekly magazine, "Lindsay and Heath hit it off straight away. When she left the club she started texting him straight away and they hooked up a few times while she was still in New York. They were meeting late at night for sex. It was purely physical."

Lindsay traveled to New York with Riley - who she met at Utah's Sundance rehab clinic in August - but the pair were seen out partying separately during their stay in the same city.

The 21-year-old actress had reportedly grown tired of Riley's jealousy and dumped him shortly after they returned to Los Angeles on November 25 following their Thanksgiving break.

Heath, 28, split from his girlfriend Michelle Williams - with who he has a two-year-old daughter, Matilda - in September.

Since then Heath has been linked to former supermodel Helena Christensen and has constantly been spotted on the New York party circuit flirting and "making out" with a string of women.

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