IS JLO'S BOYTOY GAY? DOES HE PATRONIZE PEEP SHOWS?: Late last month, on the night before JENNIFER LOPEZ'S 43rd birthday, RadarOnline ran a few photos of her boyfriend, Casper Smart, going into and leaving a naughty New York City sex shop.  (Photo 1, Photo 2) Naturally, they assumed he was there to buy J-Lo some kind of X-rated birthday gift. But "Star" tabloid thought differently.

They claim Casper wasn't there to browse the erotic paraphernalia. He was there to enjoy the gay peep shows. The not-always-reliable tabloid spoke to those all-knowing anonymous sources who say they've seen Casper there before, and maybe Casper wasn't just there to watch. One source says, quote, "This is a gay cruising spot. You go into the booths, then you get all kind of...propositions."

Meanwhile ...  In Touch Weekly claims Casper wasn't there for the to get Lopez an erotic birthday present or for the gay peepshows. Their source claims he's a regular at the exotic massage parlor upstairs.

JENNIFER AND CASPER IN DENIAL - THREATEN LAWSUITS: JENNIFER LOPEZ is so not down with the tabloids inferring her boyfriend is gay, she's got her people threatening legal action.

Attorneys for both Jennifer and Casper are calling the allegations "false, malicious and defamatory," and promise to sue Star magazine and In Touch if a full retraction isn't made. A rep for J-Lo and Casper adds, quote, "Casper is not gay. These comments are born from envy and jealousy."

KATY PERRY + JOHN MAYER PHOTOGRAPHED TOGETHER IN L.A.: Uh-oh. JOHN MAYER, that serial dater of hot, famous chicks, has scored himself another. And it’s none other than ... KATY PERRY!!! The two were snapped in a car after having dinner at the Chateau Marmont in Hollywood Wednesday night.

According to Us Weekly, the two were holding hands across the table, and stealing smooches like a couple of lovestruck teenagers. One of those ubiquitous Tinsel town sources tells the tab the budding romance is “not serious yet.” Katy and John, he or she assures us, are “just hooking up right now.”

ROMANCE REPORT - ASHTON KUTCHER WHISKS MILA KUNIS OFF TO BALI: According to the New York Post, ASHTON KUTCHER and MILA KUNIS are on a romantic getaway in the Pacific island of Bali. The pair have been trying to keep their relationship private while his divorce from DEMI MOORE is pending, but perhaps it's time to give up the pretense. As per a source, "Things have recently become more serious." RadarOnline has a couple of pictures of them at the airport in Hong Kong HERE and HERE.

CELEBRITIES IN TROUBLE - CUBA GOODING NO LONGER A WANTED MAN: CUBA GOODING JR. is no longer a fugitive from justice in New Orleans.

His arrest warrant was canceled yesterday after he met with police to discuss the incident in which he allegedly shoved a female bartender. He was scheduled to appear in court tomorrow, but that probably won't happen now, because the bartender has reportedly decided not to pre$$ charge$.

COVERSHOT: For the first time ever, OPRAH WINFREY is appearing on the cover of a magazine without blow-drying or straightening her hair. She's letting her 'fro show for the cover of "O". (Here's the photo without all those pesky words.)

CELEBRITY BIRTHDAYS FOR AUGUST 2 – MARY LOUISE PARKER, SAM WORTHINGTON AND MORE

IS MACAULAY CULKIN A HEROIN ADDICT?: Rumors of MACAULAY CULKIN's health surfaced earlier this year after he was photographed looking really thin, and now The National Enquirer has taken things up a notch claiming he's addicted to heroin! The rag tab claims Culkin regularly injects heroin and the prescription painkiller oxycodone -- and almost overdosed once.

One talkative source told the tabloid that Macaulay " [has] been hooked for a year and a half." Another claims, "[his drug use] has escalated...to the point where he needs serious help. If he doesn't get help and enter rehab now, he could be dead in six months." The sources add he started spiraling out of control 18 months ago after his romance with Mila Kunis ended and the reality of his diminishing career set in.

IN DENIAL - MACAULAY CULKIN: A rep for Culkin denied the report, calling it "categorically without merit," and "impossibly and ridiculously fictitious."  The rep added, "We beseech the responsible media to consider the source and its reputation and to please not perpetuate this destructive and insulting story by pursuing it any further."

OOPSIE! TMZ RETRACTS CLAIM JANET JACKSON SLAPPED PARIS: TMZ is backing off its claim that JANET JACKSON slapped her niece Paris Jackson then called her a "spoiled little bitch" during a dispute last week at the Jackson family home in California. The site says, “Although we believed the story to be true when we published it, we have now determined that it was not correct."

On a related Jackson note ... According to Radar Online, Randy Jackson has a good reason to try to get a piece of his brother Michael's estate -- he owes nearly $500,000 in back child support. Randy continues to mantain his questioning of MJ's will is not about the money.

LIFESTYLE OF THE RICH AND FAMOUS - 'KIMYE' GOES ZIP LINING: KANYE WEST and KIM KARDASHIAN went zip lining in the jungle of Mexico during a recent vacation. We know this because Joe Francis, creator of the Girls Gone Wild brand, tweeted out this photo with the caption “Awesome vacation.”  Word is they stayed on a remote private property so as not to rub shoulders with the un-washed masses.