Hook Ups

The Wanted singer Max George is 100% not dating Lindsay Lohan -- sources close to the heartthrob tell TMZ -- but no one seems sure of exactly how she got backstage at Jingle Ball last night in Philadelphia.

As we reported, Lindsay was spotted signing autographs at the concert -- but according to our Max sources, IF he invited LiLo ... he's not owning up to it. We're also told Max had no idea she was planning to come.

It's unclear if the two made contact while Lindsay was backstage -- but sources tell us, Max has no desire to be in a relationship right now ... with Lindsay or anyone ... seeing as he only recently broke things off with his ex-GF Michelle Keegan (some English actress).

FYI -- Michelle's smokin' hot.

So we gotta ask ...

Demi Moore's still a single woman ... despite reports claiming she's moved on from Ashton Kutcher with a 26-year-old art dealer -- so says the rumored "new man" himself.

Vito Schnabel -- the son of director Julian Schnabel -- was out at an art event in Miami last night when he was asked if there was any truth to the rumors he's dating 50-year-old Demi. Vito responded, "No. Nope."

But just hours later, Vito and Demi were spotted together at some Chanel party -- along with Lenny Kravitz and Stacy Keibler -- and "Demito" reportedly even MADE OUT.

So we gotta ask ...

Lindsay Lohan is still hot on the trail of Max George -- following him ... like a common groupie ... from NYC to Philadelphia last night, and even popped up backstage at a 'Wanted' gig.

Lindsay somehow scored a VIP pass to the Jingle Ball -- where The Wanted performed -- and was seen signing autographs for fans.

Of course, the last time LiLo tried cozying up to Max ... she got sloppy drunk, rejected by the boy-bander, and ended up in handcuffs after fighting with a woman inside of an NYC nightclub.

As we previously reported, the two have been spending a lot of time together lately ... and took a romantic stroll around Central Park earlier this week.

If history repeats itself, "Haylor" will enjoy a few more weeks of dating bliss before things go sour, Swift writes a breakup anthem and moves on to the next unsuspecting hit maker.

Enjoy it while you can, young lovers.

10:00 AM -- Harry and Taylor left the same hotel moments ago, just minutes apart from each other.

Hey ladies, wanna lock lips with Josh Duhamel (a.k.a. Fergie's husband)? Well there might finally be an opening for you -- BUT only if you're on the verge of death.

Duhamel was in Santa Monica this weekend -- doing his part at a youth event for the Red Cross -- when our photog asked him the most intelligent question ever: IS IT OKAY TO GIVE CPR TO A HOT CHICK, IF YOU'RE IN A RELATIONSHIP???

With rumors of a secret relationship in full swing, Taylor Swift and One Direction heartthrob Harry Styles were spotted in a FULL-ON CANOODLING SESSION in NYC this weekend.

While there appeared to be no hand-holding or lip-smoochery, the two seemed to be very into each other during a stroll through Central Park.

If ... and only IF ... they dated, Harry would follow in a long line of Taylor's celebrity conquests ... which includes John Mayer, Jake Gyllenhaal, Joe Jonas, Taylor Lautner and Cory Monteith.

"Bachelor" alum Jake Pavelka has snagged himself a cougar ... in the form of Tony Award winner Kristin Chenoweth ... and TMZ has the photo of them out on a date near his home in Texas.

The internet was all abuzz earlier this month when Jake and Kristin were seen getting cozy at a diner in West Hollywood. That could have been anything ... but now a TMZ spy caught a glimpse of the new couple (?) in a cafe near Pavelka's home in Highland Village, TX.

As our eagle-eyed witness notes ... they weren't kissing or anything, but they were seen holding hands and "they were veeeerrryy attentive to one another."

Just months after sealing his divorce, WWE superstar John Cena has apparently moved on ... 'cause dude was gettin' up close and personal with a former WWE Diva in Arizona.

TMZ has obtained pics of Cena bumpin', grindin' and even going in for a kiss with Nikki Bella ... who worked in the WWE with her twin sister Brie until this past April.

Nikki and Brie had their high school reunion in Scottsdale this past weekend -- and John was invited as Nikki's date.

Brie also brought her boyfriend -- WWE tag team champion Daniel Bryan.

It's unclear if Cena and Bella are "officially" an item ... but they definitely weren't shy with the PDA at the reunion.

Pete Sampras is living proof tennis players hook up with some of the hottest babes on the planet -- and, yes, we're including Andre Agassi's Barbra Streisand sitch. The 90s ... things were different.

Ronda Rousey ain't ashamed to say it ... she's all about banging dudes before she steps into the octagon -- thereby cementing her place as the coolest chick in sports.

The MMA champ revealed her pre-fight sex rituals with Jim Rome on Showtime ... saying, "I try to have as much sex as possible before I fight, actually."

Rousey says the old theory about no sex before fights doesn't apply to female fighters because making the beast with two backs increases testosterone levels in women -- clearly a plus before brawling.

TMZ broke the story ... Ronda is jumping to the UFC to become the league's first female fighter.

Don't count 'em out yet ... 'cause Danny DeVito and Rhea Perlman were spotted TOGETHER at an airport this morning ... a possible sign they're trying to save their marriage.

It's a pretty big deal ... considering the two revealed they separated back in October ... and it seemed their 30 year marriage was done for.

FYI -- the two married back in 1982 and have 3 children together.

Dolly Parton is NOT gay ... the same way that Oprah Winfrey is not gay ... so says Dolly Parton.

Dolly set the record straight about her sexual orientation during an interview with "Nightline." Parton says she's well aware of the rumors that she's in a secret relationship with her BFF Judy Ogle ... but claims the rumors are simply untrue.

"Judy and I have been best friends since we were like in the third and fourth grade," Parton explained ... saying, "We still just have a great friendship and relationship and I love her as much as I love anybody in the whole world, but we're not romantically involved."

In fact, Dolly -- who's been married to a man for 46 years -- says she bonded with Oprah over the lesbian rumors ... since Oprah has also been hounded by false rumors that she's in a secret relationship with her BFF Gayle King.

"Like Gayle, her friend, Judy, my friend ... [people] just think that you just can't be that close to somebody."

They're like Justin and Selena ... but with protective orders. Chris Brown and Rihanna were on again ... off again ... and now apparently on again.

RiRi just tweeted this pic Saturday night of CB kickin' it half-naked in bed -- bare-chested with his drawers out -- then posted it for her 26 million Twitter followers.

It's the latest in their never-ending relationship saga ... as TMZ previously reported the two have been spending more and more time together in public, including Thanksgiving -- where they partied it up at the same German nightclub.

So we ask ...

This year Rihanna is thankful for Chris Brown -- at least that's the way it looked last night on Thanksgiving ... when the two were photographed partying it up at the same German nightclub.

While the rest of America was stuffing its gullet with turkey and cranberry sauce, Brown and Rihanna hit up Berlin's Adagio nightclub after Brown's "Up Close and Personal" show.

What better way to spend the night before Thanksgiving ... than planting a big wet kiss on your man in front of an army of leering photogs -- and that's exactly what Kim Kardashian did last night with BF Kanye West.

Kim and Kanye joined Kim's sisters Kendall, Kylie, and Khloe for dinner at the Crustacean in Beverly Hills -- and on their way out, Kim showed off some shameless PDA in her sheer top and upholstered red skirt.

Lil Wayne wants to spend a night IN PARIS -- at least according to a new unreleased duet with Paris Hilton ... in which Weezy references the most famous sex tape of all time.

TMZ has obtained a copy of the song -- which Paris hopes to feature on an upcoming album -- and it's actually not that bad.

But the clincher -- Weezy raps, "Excuse my french, but f**k the cameras / I wanna spend a night in Paris."