Jennifer Lopez and Marc Anthony heading for Valentine splitsville

Monday, December 29th 2008, 4:37 PM

Lovekin/Getty

Actor/singers Marc Anthony (L) and Jennifer Lopez arrive at the Metropolitan Museum of Art Costume Institute Gala, Superheroes: Fashion and Fantasy, held at the Metropolitan Museum of Art.

Jennifer Lopez and Marc Anthony may have renewed their wedding vows a mere three months ago, but their rocky romance will likely bite the dust right after Valentine’s Day, says an insider.

“Marc and Jennifer are planning on announcing their divorce right after Marc’s show at Madison Square Garden on Feb. 14,” a friend of the couple tells us. “Jennifer is planning on joining Marc onstage for a surprise duet. Things haven’t been right for a while now, and they thought it would be a bittersweet farewell.”

Definitely one for theatrics in arenas, J.Lo confessed her pregnancy at a sold-out show in Miami during her El Cantante tour in November 2007 and will employ the same shock value a second time around.

“They’re definitely planning a clean break in February,” the source insists.

The couple, who have been married just over four years and are the parents of 10-month-old twins Max and Esme, renewed their vows in a surprise Las Vegas ceremony back in October, but sources close to the pair say that it didn’t help, and that their relationship has been on a downward spiral in recent months. Lopez, 39, set tongues wagging when she arrived at “The Curious Case of Benjamin Button” premiere in early December without her wedding or engagement rings.

Similarly, Marc, 40, has been spotted ditching his own wedding band at N.Y.C. hot spots such as Bungalow 8. He was also caught partying — bandless — with pal Eva Longoria Parker at Lavo in Las Vegas on Dec. 8.

“They were there along with Russell Crowe and his brother Bigram [Zayas]. Marc had been needing to blow off some steam for a while, and this was a good chance to do it. He was trying to be on his best behavior because there were photographers around, so he didn’t get too crazy, but he had fun without Jennifer,” a spy tells us. “Marc’s ready to move on. The fighting has been too much for him to handle lately.”

A rep for Anthony would only say that “none of the rumors are true”; a rep for Lopez didn’t respond.
Unfortunately for Jenny from the Block, this is one unfunny Valentine.

Seen and heard

Bret Michaels was frolicking in a limo hot tub with three ladies in L.A. when he heard the joy-killing sounds of police sirens. “Bret got pulled over for not wearing a seatbelt in the hot tub!” an insider giggles.

While many celebs are heating up Miami for New Year’s, like Macy Gray’s Greenhouse bash at the Setai, Las Vegas parties are giving South Beach a run for their money. Fergie’s hosting at Lavo in Vegas, while Carmen Electra is set to rock Tao. Prive Las Vegas has Lance Bass and Denise Richards while Usher is ushering 2009 in at The Bank Nightclub at the Bellagio. In New York? Head to Marquee to celebrate with hunky Mario Lopez or to Nikki Midtown to hang with David Schwimmer and Mira Sorvino.

“South Park” creators Matt Stone and Trey Parker drinking and laughing with “Saturday Night Live’s” Bill Hader at SideBAR . . . WWE honcho Vince McMahon in an “uber-tight T-shirt” eying a pretty lass in a Florida airport so hard, she got up and left . . . Jamie Foxx dining at Sofrito for the third night in a row before playing the conga drums with the house band.

Wicked whisper

Which frisky royal ditched his own party to have sex on a nearby yacht? The playboy snuck off with a bombshell, leaving his security staff looking all over for him.