By Crystal Henderson, EnStars | Feb 27, 2013 01:01 PM EST
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Liam Hemsworth, the Australian actor who got engaged to Miley Cyrus in 2012, was seen leaving a hotel in Los Angeles with a blonde-haired woman by his side that was not his fiance but in fact Mad Men actress January Jones, Hollywood Life reported.
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Hemsworth showed up at the Chateau Marmont on Feb. 23 without his bride-to-be and was seen leaving the hotel and acting like a perfect gentleman to Jones.
"Liam got January's coat and helped her put it on, then they headed outside.They made sure to leave a few seconds apart, so they wouldn't attract too much attention," a source said. "Then they jumped into a waiting car and took off."
Star claimed that eyewitnesses even saw Hemsworth and Jones kiss, with a source telling the magazine, "It looked like they had some hot chemistry. They were all over each other-and they even kissed!"
Meanwhile Cyrus, who gushed about the Hunger Games star in several interviews and even called him "hubby," attended the Elton John AIDS Foundation Oscar after party on Sunday night by herself. The magazine noted that Cyrus was "all over the place" at the bash and a source said, "She certainly gave off the impression that she's single.
"Someone even asked her how Liam was doing, and she said she doesn't care how he's doing!" the insider added.
Cyrus caught the attention of onlookers in mid-February at New York Fashion Week when said she "flirting with every guy and girl in sight, especially the models," according to a source. Cyrus even got into a dispute with celebrity blogger Perez Hilton after he accused her of hooking up with Gossip Girl actor Ed Westwick.
She tweeted, "@perezhilton hope you find love one day but can you not f**k with mine."
After Hilton apologized, she replied: "@PerezHilton feel free to ask me whatever u want but I can't tolerate lies. Thanks for understand. Blessings."
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