A bartender at the Lion’s Den restaurant in Waterford, Mich. confirms a fan’s report that Miley is totally into her new on-screen love interest. But oops – he already has a girlfriend!

Miley Cyrus seems to be totally over her boyfriend of a year, Liam Hemsworth, and ALSO appears to have moved on to yet ANOTHER co-star — Douglas Booth. HollywoodLife.com chatted to a bartender at the Lion’s Den in Waterford, Mich., who corroborated a fan report that Miley and her new on-screen love interest in LOL: Laughing Out Loud were getting cozy this week – three days before Liam announced their break-up!

“It looked like Miley was very interested in [Douglas],” the bartender – who prefers to remain nameless – tells us. “I thought they were boyfriend and girlfriend, they were flirting so much. She was really fawning all over him, acting really girly-girly. For his part, he seemed to be eating up the attention.”

Although the 17-year-old Hannah Montana starlet was very touchy-feely with Douglas, also 17, they weren’t doing anything illicit in the restaurant — after all, they WERE out with fellow LOL stars Ashley Greene and Tanz Watson. “The flirting was very respectful and no, they didn’t [kiss],” the bartender says. “They were among friends and other people in the restaurant – but she WAS falling all over him. ”

The Lion’s Den staffer corroborates an eyewitness report by fan Taylor, who wrote of her August 22 run-in with Miley & co. at the restaurant, “It was really weird, though, she was ALL over the Douglas kid. I wanted to ask her where Liam was but thought that would be a little rude lol.”

Well, not SO rude, given that Liam, 2o, broke the news of his split from Miley August 25; the couple dated for a year after meeting on the set of their tearjerker The Last Song last summer. While it looks like his ex is trying to move on with her hunky British co-star – who happens to have a girlfriend of three years! – Liam himself looks to be just fine. New reports indicate that he had a few hot dates with an older woman named Katy in Huntington Beach, Calif

Laura Schreffler & Russ Weakland