Shia LaBeouf/Megan Fox HOOKED UP

Shia LaBeouf is not known for his reticence, and in a new interview with Details magazine the 25-year-old actor admits that he got it on with former Transformers costar Megan Fox while shooting the first two films in the franchise.
When asked if he and the starlet had hooked up, LaBeouf nods in the affirmative. "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," he says. "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 on screen."
No biggie, right? Why shouldn't two attractive young stars mix business with a little pleasure on a movie set? Well, here's the thing: Fox, 25, is married to former Beverly Hills 90210 star Brian Austin Green, 37. Though Fox and Green definitely weren't hitched at the time and famously called off their engagement at one point, they have been together off and on for six years -- possibly making LaBeouf's revelation problematic in terms of Fox's timeline.
When asked if Fox and Green were on a break when he hooked up with her, LaBeouf replies, "I don't know, man. I don't know. I don't know. I don't know... " According to the article, LaBeouf goes on to utter that phrase -- or some variant of it -- 12 times in a row. To us, that's interesting. To LaBeouf, "It was what it was."
Fox was famously replaced by Victoria's Secret model Rosie Huntington-Whiteley for Transformers: Dark of the Moon (opening June 29). While Fox originally said that it was her decision to leave, word is now out that executive producer Steven Spielberg told director Michael Bay to fire the sultry actress after she compared Bay to Hitler in an indiscreet interview.
Fox isn't the only former hook-up LaBeouf discusses in Details. He also dishes on the worst date he ever went on (with Hilary Duff!) and opens up about ex-girlfriend Carey Mulligan. Of Mulligan, the candid actor says: "I still love her... I think she's a f***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."