Labeouf Pulls a Valderama. Cops to Banging Foxy, Cheating on Isabel & HilDuff Being Worst Date Ever

Shia LaBeouf admits that he hooked up with Megan Fox while making the Transformers films -- and he's not sure whether or not his sexy costar was attached at the time to then-boyfriend Brian Austin Green, now her husband.

Nodding in the affirmative about a hookup with Fox, LaBeouf explains in a new Details mag interview, "Look, you're on the set for six months, with someone who's rooting to be attracted to you, and you're rooting to be attracted to them."

Without giving specific dates or details, the 25-year-old actor (now dating Hollywood stylist Karolyn Pho) continues of the fling: "I never understood the separation of work and life in that situation. But the time I spent with Megan was our own thing, and I think you can see the chemistry onscreen."

When Details asks him about Fox's status at the time with Green, he sputters. "I don't know, man. I don't know. I don't know. I don't know," he says, repeating "I don't know" eight more times. "It was what it was."

to include him alleging to have beat up Tom Hardy, saying men are jealous of him, that he has more money than he could spend in 25 lifetimes and why his life is so much harder than Clooneys...

Fox, 25, wed on-and-off beau Green one year ago in Hawaii. She was famously replaced by Rosie Huntington-Whiteley for Transformers: Dark of the Moon, out next month. (Director Michael Bay and LaBeouf recently confirmed that Fox's controversial comments about Bay, comparing him to Hitler, got her dropped from the franchise -- at the direct order of executive producer Steven Spielberg.)

LaBeouf also opens up about other failed romantic entanglements. His one date with Hilary Duff was "probably the worst date either of us have ever had."

He also fesses up to "philandering around" with former co-star Isabel Lucas. "It was sort of disastrous...Neither one of us, I think, were in love. Just sort of experimenting or whatever."

On his ex-girlfriend Carey Mulligan, with whom he parted ways in October 2010: "I still love her...I think she's a fu**ing awesome person and an incredible actress. We're still pals. I wouldn't take any of it back, and I don't think she would either. It just ran its course."


UPDATED: More gems from full interview

"I just don't have the wherewithal yet or the inner serenity. My bullshit meter is tuned very sensitive. The minute it starts kicking up, I get back to truth, and sometimes that involves, you know, 'I don't want to take a picture.' And if that's the case, am I an asshole for being honest? Or am I an asshole for being dishonest, smiling in your picture and I fucking hate being there? Which one is worse? These are the questions I ask myself that George Clooney doesn't ask."

He spits constantly when he's outside ("I have a wet mouth") and is given to reciting poetry, reading me Charles Bukowski's "Bluebird" and "B as in Bullshit" off his iPhone.

"I do feel animosity from men. They feel like they want to challenge me. 'I just fucked up Shia LaBeouf!' It's a story you can tell, and I guess you're cool for it."

"I've noticed that since this 'wild child' shit has been posted on my head," he says, "people seem a little more respectful."

...backstage throwdown with Tom Hardy after a joke gone awry ("He never did that roughhouse stuff with me again")

"But I mean, I don't give a fuck. At this point I have enough money to live 25 lifetimes. You couldn't spend the money I've accrued now."


Having flashbacks to