Hook Ups

Tristan Thompson was brazenly cheating on Khloe Kardashian with not one but two women back in October, when Khloe was 3 months pregnant.

TMZ obtained this surveillance video recorded October 7, 2017 at a hookah lounge outside Washington D.C. You see Tristan with 3 women, 2 of whom are fully engaged with Khloe's baby daddy.

Tristan makes out with one of the women, tongue and all. The other grabs his head, brings it to her chest and he motorboats her. And the same woman grabs his junk.

The video was recorded the night before the Cleveland Cavaliers played the Washington Wizards.

Tristan also appeared to take another woman into a hotel room just last weekend.

Aubrey O'Day's on a roll for Easter, but it ain't like the one that's happening at the White House this week ... not even close, actually. You seeing this, DTJ?

Aubrey posted a revealing photo Sunday just in time for Easter, which shows her bottomless and bunny-ed out, cottontail and all. She captioned the pic "egg hunt #happyeaster" ... and at first glance, you might not even realize she's surrounded by 'em.

As we reported ... the former Playboy model and singer has been mum on her alleged 2012 affair with Donald Trump Jr. in the wake of his pending divorce with his wife, Vanessa -- at least publicly she has.

However, she's been telling friends that she absolutely hooked up with him post-"Celebrity Apprentice," but that it didn't have anything to do with his and Vanessa's split.

Meanwhile, Trump Jr.'s been spotted being civil with his estranged spouse lately -- hanging out with her and their kids for Spring Break at Mar-a-Lago just a week ago.

Aubrey O'Day is finally returning to going out in public -- on the heels of her alleged Donald Trump Jr. affair becoming huge news -- but she's definitely not pulling a Stormy Daniels. Yet.

The singer, and ex-"Celebrity Apprentice" contestant, was out in Bev Hills over the weekend, and -- as she must have expected -- got hit with questions about Trump Jr. and their alleged 2012 fling.

It's clear Aubrey's not ready to spill the tea, at least publicly. As we reported ... she's already told friends the affair happened, but it has nothing to do with his wife, Vanessa, filing for divorce.

BTW, her companion in this video is infamous for her butt. We're talking about Aubrey's Maltese pup, Ginger -- not her Kim K look-alike friend.

You might recall ... Aubrey, Ginger and her other pooch, Mary Ann got into hot water in 2012 when they -- the dogs, not Aubrey -- plopped their asses on a lunch table at Toast in WeHo.

8:30 AM -- Justin's date was Baskin Champion, and he's very familiar with her family. Baskin's sister is Abby Champion, gf of Patrick Schwarzenegger ... who's JB's BFF.

Got all that?

Justin Bieber's rebound game was in full swing as he left a Sunset Strip concert with a mystery chick.

The Biebs, who normally gravitates to brunettes, threw a change up outside the Roxy Tuesday night by opting for a blonde companion. It's his first public hook-up, post-Selena Gomez, and Justin tried their best to go undercover as they bolted out of Craig David's show -- she got into their waiting SUV first, and Justin followed about 10 seconds later.

Considering the pics we got of Selena hanging with friends, including a mystery guy, on a yacht in Australia ... fair to say they're both moving on. For the umpteenth time.

Blonde chick aside ... Justin did something else he hasn't done in a while -- he got on stage at the Roxy. Craig David invited him up, and Bieber showed him a lot of love.

Turn the page.

Alex Pall of The Chainsmokers ain't letting a little cheating ruin his game -- then again, it's easy to spit game when you stick with the chick with whom ya got caught cheating.

Alex was out with this blonde bombshell Wednesday night in Hollywood ... just 2 months after his ex, Tori Woodward, brutally exposed him as a cheat by posting video showing him kissing the other woman.

She's way less grainy now, seen through a regular camera lens, but this IS the blonde from that surveillance video. Same dark roots, petite frame and a tad shorter than Alex. What we don't know is if they're dating exclusively, but clearly ... they're at least exploring their options.

If he's sticking with his former side piece ... Alex's comment to us a few weeks back is interesting -- Tori deserves a better guy than him -- kind of like, "It's not you, it's me."

"American Idol" producers have a tricky way of keeping tabs on contestants looking to sneak out of their rooms to bang other contestants ... according to former 'Idol' contestant Jackie Tohn.

We got Jackie, who was on season 8, Monday night at the Hollywood Improv, and she had a flashback when we told the new 'Idol' contestants have been hooking up like crazy.

Jackie says back in her day, producers put a simple piece of tape to good use. You gotta see her break down the strategy used to make sure 'Idol' hopefuls were working on music, and not each other. Hint: Don't break the seal!

"American Idol" contestants have all been staying in an L.A. hotel together and it's a good bet they're keeping other hotel guests up late at night ... because there's been a lot of banging.

Production sources tell us this season is different from all the others, because contestants are not only hooking up, at least 2 of them and possibly 4 are in actual relationships. There have been a number of casual hookups as well.

We're told producers found out about the bangfest and they're okay with it.

Our production sources say in the first run of the show there were never obvious hookups, but they think the batch of young contestants this season is just further proof Tinder is ingrained in their culture.

Maybe one of them will sing a Crosby, Stills and Nash song ... "If you can't be with the one you love, love the one you're with."

Nick Jonas' hot Australian mystery chick is a mystery no more -- and she's not just a smoke show, she's a smart one.

TMZ has learned her name is Annalisa Azaredo, and she lives in Sydney ... where Nick's currently on vacay with his brother, Joe. She's the epitome of beauty AND brains, too, having studied biomedical sciences at the University of Melbourne.

Annalisa's well-balanced though -- she knows how to have a good time, as you can see in the pics.

We broke the story ... Nick and Annalisa had a pretty hot date, spending the entire day together, despite her having a bloody cycling accident. Good thing they toughed it out .. the date ended with a bang.

Nick Jonas isn't gonna let a little thing like an open wound on a hot chick's knee crush his game, as proven by this footage of their epic day ... complete with public makeout sesh.

Nick and his bro Joe are gallivanting around Australia this week, but Nick went solo on Wednesday for a hot date that got off to a rough start when his date banged up her knees during a bike ride.

Not to worry, he rescued the sexy sheila (Aussie for babe) in distress by sweeping her off her feet -- and gnarly knee.

Nick and his chick did lunch, did the beach, did a romantic nightcap at Sydney's Watson's Bay Hotel -- then, most likely, did each other.

They didn't even try to hide their hot and heavy hook-up, and we're told they left together after the place cleared out.

Lupita Nyong'o has Michael B. Jordan wrapped around her finger ... for at least a few more days, but that's what he gets for betting.

The "Black Panther" co-stars have been getting pretty flirty in recent weeks, and it continued when she popped into his dressing room Monday at "The View." After grabbing/caressing Michael's face ... Lupita demanded he drop down and pump out ... one push-up.

Apparently they made some bet, which he lost, and now MBJ has to do on-call, on-demand push-ups.

The dressing room antics only fueled dating rumors. They were spotted getting a little handsy at several events and promotional appearances last week ... including NY Fashion Week.

While their fans are all about it, and would LOVE to see them really be a thing ... our sources say the flirting is more about promoting the movie.

Marlon Wayans is taking the news about Richard Pryor and Marlon Brando hooking up in stride -- and he's even got a pretty good idea of how it happened.

We got Marlon Wednesday night at Madeo in WeHo and told him Pryor's widow confirmed Quincy Jones' bombshell about Brando hooking up with her late husband.

Marlon's view -- Richard had good taste! Fact is, Pryor was pretty open about his bisexuality.

Quincy Jones has made some bold dating claims lately, but this one takes the cake ... he says he used to date Ivanka Trump, who he remembers as being pretty damn hot.

The music legend says he and President Trump's daughter hooked up -- meaning, dated -- about 12 years ago after Tommy Hilfiger told him Ivanka wanted to have dinner with him.

He tells Vulture he jumped at the opportunity, telling Tommy ... "'No problem. She's a fine motherf*****.' She had the most beautiful legs I ever saw in my life. Wrong father, though."

Q said he used to hang with Ivanka's dad too, but his memories were not nearly as fond -- "He's a crazy motherf***er. Limited mentally -- a megalomaniac, narcissistic. I can't stand him."

Malia Obama's gonna remember her first Harvard-Yale football game -- and so is the guy she made out with during the tailgate party!

Barack and Michelle's oldest was pregaming with friends Saturday outside the Yale Bowl in New Haven, CT, and wound up kissing a mystery guy who seemed to be pulling for Harvard, too ... based on his crimson tee.

The makeout sesh is no big deal -- just a freshman doing what freshmen do -- but the fact Malia lit up a cigarette might not sit well with mom and pop. Remember, Michelle famously disapproved of Barack smoking.

We'll say this though ... Malia made out a lot better than her team. Harvard got crushed 24-3.

Go Crimson!

Amber Heard and Elon Musk are back together ... for one meal, at least -- and the timing of the reunion is pretty conspicuous.

The exes broke bread Thursday morning at a Sherman Oaks restaurant where, interestingly, they chose to sit right next to each other -- not across from each other. It's the first time they've been seen together since announcing their breakup back in August.

No obvious signs of PDA, so it could be totally copacetic. However, the sit-down comes the day after Elon revealed to Rolling Stone how heartbroken he was about Amber. He said, "I was really in love, and it hurt bad."

He added, "If I'm not in love, if I'm not with a long-term companion, I cannot be happy."

Not the sexiest mating call we've ever heard, but to each his/her own.

Justin Bieber got an awesome body check from his gf, Selena Gomez, during a hockey time-out when she planted a serious kiss on him.

The reunited couple hooked up Wednesday night in L.A. at Justin's weekly hockey game. We've known they were back on for weeks, but the public kisses are like a sealing of the deal.

Selena went to hockey night a couple weeks ago, but no PDA that time around. We'd say the re-coupling -- which, as we told you was initiated by Bieber months ago -- is going well. Very well.

Justin Bieber and Selena Gomez spent much of the day Saturday in prayer.

Justin and Selena spent a good chunk of the day at a Hillsong Church service in Downtown L.A. Both are active members of the church.

As we previously reported, the church is one of the things that brought Justin and Selena back together. They are back together, after Justin began courting Selena a few months back when she had her kidney transplant.

They've been virtually inseparable over the last few weeks ... chowing down, bike riding, attending hockey games and, of course, church.