Cameron Diaz– the ex GF– and Jessica Biel– current paramour of Justin Timberlake — will both be presenting at the upcoming MTV Movie Awards.

The handlers are doing everything “to keep Cam and Jess far apart,” admitting that the situation is creating “a mess.”

You might remember that Diaz got all up in JT’s face when she saw him flirting with Biel at a Hollywood party back in January. But now that Timberlake is very publicly bringing sexy back with Biel, the triangle of stars will have to be very carefully managed.

Says a source, “Cameron’s looking a little unstable lately.”

Dude, Cameron Diaz is a freak. That chick has some mental problems that can only be solved by some Rx. My money? On Biel. She can kick some serious butt. I bet she’s all rough and tumble in bed. Clawing, biting, scratching, kicking, screaming. . . And that would be just the foreplay.

Cameron Diaz? Never saw the attraction. She looks like a duck & laughs like a crazy maniac. Of course she does have that big mouth, which I’m sure comes in handy. I’m just glad we got a Jessica Biel story so that Jack could post that pic of her below. Now I don’t want to sound sexist, but if men were not supposed to snap it to that pic, then I don’t know what that pose is for. Yowza! (PS… nice file name Jack.)