Megan Fox filed for divorce from Brian Austin Green and a new tabloid suggested that her "Transformers" co-star Shia LaBeouf had something to do with her decision.

The rumor about Megan Fox and Shia LaBeouf hooking up is not new. The fling allegedly happened in 2008 during the sequel of "Transformers."

A video from X17 posted on YouTube even showed one paparazzi lying in wait outside Shia LaBeouf's house and directly asking him if he is dating Megan Fox now, which caused the divorce to Brian Austin Green.

To his credit, the volatile "Transformers" actor managed to control his temper and just mouthed off an expletive down the cameraman's way instead of storming to punch the guy, which would have resulted to an expensive lawsuit.

"Now rumors that Shia and Megan were hooking up again! Was that the final straw for Brian? Did her kick her to the curb because he found out she was messing around with her former co-star?" CDL said.

It added, "Even if Shia and Megan are having an affair and Brian found out about it, is either one of them stupid enough to admit it or go public while this whole thing is still fresh? Why would Megan hand Brian ammunition against her on a silver platter?"

Meanwhile, People published a photo of Brian Austin Green still wearing the wedding ring despite the divorce filing from Megan Fox.

"The Beverly Hills, 90210 actor, 42, donned his band as he filled up his car at a a gas station on Friday. Green was dressed casually, and still sporting a shaved head," the magazine said.

Before the divorce, Brian Austin Green and Megan Fox were married for five years. They have two sons together, Noah and Bodhi. In the documents, the "Transformers" star cited irreconcilable differences as the reason for dissolving the marriage. She's also asking joint custody.