Dating

HUGE legal victory for Shaq -- the lawsuit filed by an alleged ex-mistress who claimed the NBA star harassed her following their breakup has been dismissed ... because the judge says she's a dirty LIAR.

As we reported, Vanessa Lopez filed her lawsuit against Shaq back in 2010 claiming she was his mistress for 5 years ... and once she broke up with him, he launched a campaign to harass her and make her fear for her safety.

But the Florida judge just lowered the legal boom on Lopez in his ruling -- claiming the court CAUGHT HER in several lies ... proving it's impossible to believe anything that comes out of her mouth.

"[Lopez] lied often. She lied about facts important to the defense, and she demonstrated an utter disrespect for the system of justice," the judge stated.

Among Lopez's lies -- the judge says Vanessa claimed she "did not know of" any previous restraining orders that had been issued against her ... when there were official records showing she was hit with one stemming from a case involving an ex-boyfriend.

The judge says there's also proof she lied about her legal history with NBA star Kenyon Martin ... who had accused her of stealing his credit card and running up charges.

And there's this ... Vanessa's lawyers completely deserted her almost immediately following her deposition earlier this year ... a huge red flag.

Simon Cowell's ex-fiancée, Mezhgan Hussainy, has absolutely no plans to write a scathing tell-all book about everyone's favorite acerbic judge, despite reports to the contrary ... TMZ has learned.

British tabs are buzzing today with a report that Hussainy is out of "revenge" against Cowell and plans to pen a book and reveal all the couple's dirty laundry.

But a source close to Hussainy tells TMZ she is "not the type of person" to write such a book and that Hussainy and Cowell are still very close ... despite breaking off their engagement last year.

A rep for Hussainy tells TMZ she "has absolutely no plans to write a book of any sort."

George has met his match.

Lucie Kim now claims Justin should have put the kibosh on the pic because he was an adult.

According to the amended lawsuit, Miley's parents gave Justin authority to "supervise, manage, guard, and oversee [Miley's] conduct while in [his] presence."

Madonna has been flaunting boytoy Jesus Luz all over NYC –- and her other, slightly older boytoy, Alex Rodriguez, reportedly ain't happy about Madge's swingin' ways.

"It's embarrassing for him because he and Madonna have been so publicly linked," says a source of Frostytips to the NY Daily News. "And now it looks like he's been dumped for a younger stud." But amusingly enough, says the source, Madonna is telling A-Rod it's a "publicity trick" to take the heat off their own romance.

The chick, Wendy Rice, is the one confronting him in the video posted earlier today -- she tells us during their argument McLean repeatedly told her "I'm an alcoholic."

Hilton just did an interview on KIIS-FM, where she explained the compromising pics, the real reasons they parted and actually kept it classy for once -- by even promoting Benji's upcoming CD.

She also said they are just "on a break." That worked so well for Ross & Rachel.

We know Ray's got a penchant for kissing on camera -- but please, wait to get home or at least clear out the backseat before mackin' on your girl next time!

Mary-Kate dated Katzenberg on-again-off-again for several years. Katzenberg took up with Nicky after Mary-Kate supposedly left him for Stavros -- who then dated Paris for a bit in 2006. Confused yet?

The relationship is over, but the drama has just begun -- and it looks like Cameron Diaz is hooking up to make Justin Timberlake jealous.

According to TMZ spies, Cameron is currently camped out on the North Shore of Oahu, Hawaii with super surf stud and current ASP World Tour champ Kelly Slater.

We're told the couple shared a romantic oceanfront dinner at Haleiwa Joe's restaurant before heading back to Slater's place. Indeed, we're told Cameron is staying with Slater. The two have been friends for years; Slater even appeared on Cameron's MTV show "Trippin" in 2005.

Other TMZ spies tell us that during the Golden Globes, Cameron kept coming up to Justin's table, trying to engage him in conversation.

Each time she left, a frustrated Justin made it clear he just wanted a clean break.

Is The Game a cry baby with nothing to offer in the sex department? That's what one of his ex-girlfriends seems to think.

TMZ dug up an old episode of the popular dating show "Change of Heart" from 2000, where the platinum selling rapper, unknown at the time, takes one of the worst beatings of his life from a former lover ... keep in mind he's been shot several times since.

The Game, then 21 years old, claims he called up the show to test the strength of his love for then-girlfriend Sadita. What ensued was 30 minutes of pure humiliation.