(Cover) - EN Showbiz - Cameron Diaz is said to be in a desperate bid to win back ex-boyfriend, Justin Timberlake.

The couple ended their three-and-a-half-year relationship back in 2006 after they had initially said they were just on a break.

The stunning star now wants to get Justin back from current partner Jessica Biel - because she feels that's exactly what the actress did to her, according to Star magazine.

"She's determined to make it happen," an insider told the publication. "Cam's been calling Justin regularly, telling him how much she misses spending time with him and stroking his ego big time.

"She's aware that there is still a strong sexual spark between them, plus she makes him laugh a lot. Justin always says that girls who can make him laugh are big turn-on!"

Cameron recently split from baseball star Alex Rodriguez. However, the Hollywood star apparently still holds a grudge against Jessica for getting together with Justin when they were only supposed to have been on a relationship hiatus.

The 39-year-old infamously got into an argument with Justin, 30, at a Golden Globes after-party in 2007.

"What is she, your new f**king girlfriend?" Cameron allegedly shouted at the Sexy Back singer before the pair got into a 40-minute argument.

"Cameron has told pals that she went wrong the last time, pressuring Justin to marry her," the insider said. "Jessica is doing that with him now, so Cam's been saying that marriage is old-fashioned and the idea no longer interests her."

The source added that Cameron's tactics are paying off, as the former couple recently enjoyed a quiet dinner together.

She feels they have both grown a lot over the past few years and should give things another chance. (C) Cover Media