Miley Cyrus' supposed fiance Liam Hemsworth spent Oscar night getting cozy with January Jones, according to the Star.

The Star may not be the most reliable source, but pictures appeared on the Internet of Hemsworth and Jones in the back of a car. And, as you know, the Internet never lies.

The Star reported the "The Hunger Games" actor showed up at a party at the famed Château Marmont hotel without Cyrus and proceeded to cozy up to the "Madmen" actress.

"It looked like they had some hot chemistry," an eyewitness told the Star. "They were all over each other -- and they even kissed."

Miley ain't gonna like that one dang bit.

Cyrus, who recently referred to Hemsworth as her "hubby" in a Cosmopolitan interview, showed up on Oscar night at the Elton John AIDS Foundation party where, a witness told the Star, she was "all over the place."

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