meganengaged3.jpg Megan Fox's rep has confirmed to X17online that the Jonah Hex star is engaged again to longtime boyfriend Brian Austin Green, after the actor proposed to her on June 1 when the two were vacationing together on the big island of Hawaii.

"I saw her jumping up and down," a witness tells Us Weekly, but it looks like Megan dropped the 2-carat rock on the beach, because just a few seconds later the spy saw "half dozen staff sifting through the sand." Oops! "Security and maintenance staff spent a couple of hours looking for it," another source tells the mag. "No one found it."

Megan and Brian have been on and off since 2004 with a string of breakups (along with a broken engagement in February of 2009), so maybe this is it? Then again, they still have to make it down the aisle...

Click the gallery below to see more shots of newly engaged Megan and Brian at last night's Lakers game!

Los Angeles Lakers Staples Center flip flops