20 Rumored Co-Star Affairs We’ll Always Wonder About

Glen Powell & Sydney Sweeney

When early photos emerged of Glen Powell and Sydney Sweeney filming their rom-com Anyone But You it didn’t take long for fans to speculate that the two were having a fling behind the scenes.

Amid the rumors, Powell split from his girlfriend of three years, Gigi Paris, however Sweeney appears to still be with her fiancé Jonathan Davino. 

Sweeney denied affair rumors in an August interview with Variety. “It’s a rom-com,” she told the magazine. “That’s what people want! Glen and I don’t really care.

Olivia Wilde & Harry Styles

Of course, we know that Don’t Worry Darling director Olivia Wilde did date her co-star Harry Styles but we’re still wondering about the exact timeline.

While Wilde has insisted that their romance began after she split from Jason Sudekis, many fans are not convinced and insiders still hint there was infidelity behind the scenes.

Aaron Dominguez & Selena Gomez

While Aaron Dominguez and Selena Gomez were filming the first season of Hulu’s Only Murders In The Building, tabloids ran rampant with stories the co-stars were a new item. “She deals with it a lot, I’m sure,” Dominguez said of his co-star fielding dating rumors during a press junket, per Insider. “When you’re under the spotlight a lot… that’s a pointed topic for her all the time.” Dominguez never outrightly shut down the speculation, so we’re still left wondering if the pair’s on-screen chemistry translated off-screen. 

Lady Gaga & Bradley Cooper

No matter how many times Lady Gaga and Bradley Cooper tell us they are “just friends,” we will never be dissuaded from believing that their romantic — and highly convincing — performance of “Shallow” at the 2019 Oscars was real. That chemistry and their bond in A Star Is Born was so electric, it felt like no one else was in the room — even though millions were watching from around the globe. 

Quashing the romance rumors was certainly made more difficult when Cooper split from longtime girlfriend Irina Shayk just a few months after their movie was released.

Gaga understands us, though. She felt it, too — they had each other at “hello.” “The second that I saw him I was like, ‘Have I known you my whole life? It was an instant connection, instant understanding of one another,” she told Vogue in 2018. Maybe they were lovers in another life — just not this one. 

Liam Hemsworth & Jennifer Lawrence

After fans heard Liam Hemsworth ex-wife Miley Cyrus’ song “Flowers,” which insinuated he’d cheated and was dropped on Jennifer Lawrence’s birthday, many assumed the Hunger Games co-stars had an affair.

Lawrence has admitted to secretly kissing Hemsworth but shut down affair rumors during a June interview on Watch What Happens Live.

“Not true, total rumor,” the No Hard Feelings star said of the allegations. “I mean, we all know me and Liam, like, kissed one time. It was years after they’d broke up.”

Alisha Wainwright & Justin Timberlake

The movie Palmer came and went quickly after being released, but doubts still linger in some people’s minds about Justin Timberlake and co-star Alisha Wainwright. We do know they were caught by the prying eyes of the paparazzi in some light PDA that certainly didn’t make pregnant wife Jessica Biel happy. 

Timberlake issued a mea culpa on his Instagram account promising that it was nothing more than a drunken, but inappropriate, flirtation caught on camera.

“A few weeks ago I displayed a strong lapse in judgment — but let me be clear — nothing happened between me and my costar,” he wrote. “I drank way too much that night and regret my behavior. I should have known better. This is not the example I want to set for my son.”

Marion Cotillard & Brad Pitt

We totally forgot about this one, but there was always a cloud of suspicion around Allied co-stars Brad Pitt and Marion Cotillard. The reason why we forgot is that these rumors dropped right around the time Angelina Jolie filed for divorce. 

A Page Six source claimed in 2016 that Pitt was “in the throes of some insane midlife crisis.” Yet insiders on Cotillard’s side swore that she was solid with longtime boyfriend, French actor and director Guillaume Canet. “They are still very much together. They have been a couple since 2007 and have one child, but have never married.”

Lots of on-set photos showed Pitt and Cotillard looking cozy together, but maybe it was just great acting?

Will Smith & Margot Robbie

Now that Jada Pinkett Smith’s “entanglement” with singer August Alsina has been revealed, it’s time to revisit Will Smith and Margot Robbie’s clearly visible on-screen chemistry in 2015’s Focus. 

There were rumors that there might have been something more than just a friendship in the tabloids after the two were seen canoodling together during a cast party, per Page Six. And we know that Will alluded to the fact that he hasn’t been a complete angel in his marriage during that frank Red Table Talk with his wife. 

We are putting this pairing as a strong maybe, right?

Jessica Simpson & Johnny Knoxville

OK, there are some things we don’t have to wonder about when it comes to Jessica Simpson and Johnny Knoxville on the set of The Dukes of Hazzard in 2005. Simpson’s Open Book memoir let us in on the secret that it was a full-blown “emotional affair.”

“We had become actors in our own lives, playing ourselves,” she wrote in the book, per Hollywood Life. “Worse, we slowly acted out our parts even when cameras weren’t rolling. When we did appearances, we didn’t want to disappoint people by not doing the whole act. It didn’t feel wrong, because it was just exaggerated, idealized versions of ourselves. Heck, I wanted to be that happy.” 

Even though Simpson has been forthcoming about the betrayal in her marriage to then-husband Nick Lachey, we wonder if it could also have crossed physical boundaries. Maybe she wanted to protect her ex from what we’ve all been wondering for over a decade?

Blake Lively & Ben Affleck

While Blake Lively and Ben Affleck were filming The Town in 2009 in Boston, the paparazzi always seemed to catch them touching while the cameras weren’t rolling. He also gushed about her on Anderson Live and it just felt a little extra. “She is fabulous as you can see, she’s a gorgeous young woman,” he said. “She was in The Town with me and she was fabulous.”

It doesn’t help that Affleck wasn’t on his best behavior during his marriage to Jennifer Garner, so this keeps the possibility open: Might there have been more to this working relationship than meets the eye?

Emily Ratajkowski & Ben Affleck

Emily Ratajkowski seduced Ben Affleck on-screen in Gone Girl, but it’s hard to tell if they practiced those acting scenes off-screen. There was a lot of smoke when it came to the rumors, but there never seemed to be any fire. Ratajkowski often talked about the big age difference between the two of them and it made us feel like she really wasn’t interested in an older man.

“The whole experience was a little surreal, I have to be honest,” she told The Today Show about working with him. “Obviously, Ben Affleck is one of those – you know his face. I grew up with that face! Not sure he would like that.”

Lily James & Dominic West

Dominic West and Lily James made it really hard for us to believe that nothing happened. The Pursuit of Love stars, who are playing father and daughter in the project (eww!), were seen zipping around Rome last July in what clearly looked like some flirty PDA.

The end result was a canceled press junket for James for her movie Rebecca (more on that in the next photo) and an awkward staged press conference with West and his wife, Catherine Fitzgerald, who claim that everything is great in their marriage. The situation seems suspicious but…okay? 

Armie Hammer & Lily James

The rumors around Rebecca co-stars Armie Hammer and Lily James surfaced around the same time as James and Dominic West’s carefree jaunt around Rome. The press wasn’t cutting the young actress a break, but she warned everyone during an interview with Grazie that what we see on social media and in the tabloids are “a complete minefield and very rarely what things appear to be.”

Jennifer Lawrence & Chris Pratt

Anna Faris did not love the rumors coming from the set of Passengers in 2016 alluding to the possibility that her then-husband Chris Pratt might be having an affair with co-star Jennifer Lawrence. Faris revealed in her memoir, Unqualified, that the gossip and constant media stories made her “feel insecure,” per US Weekly. 

Lawrence took a direct approach to squashing the rumors, but it took her almost two years to address the issue. “I never had an affair with Chris Pratt on Passengers,” she told KISS FM. “That’s a good one. I mean they got a divorce like two years later and everybody was like, ‘Jennifer Lawrence!’ And I was like, ‘What the… what I’m in Montreal two years later.'”

Linda Cardellini & Jason Segel

Anyone who loved the cult classic Freaks and Geeks knows that Jason Segel’s character, Nick, had a major crush on Lindsay, played by Linda Cardellini. Who could forget him serenading her with the corny Styx ballad “Lady?” 

For years, fans hoped that this on-screen duo carried over to real life — and they actually did. In this bit of long-forgotten gossip history, the actors wound up dating for several years after the show was canceled.

What made everyone really curious was that many people thought Segel wrote the movie, Forgetting Sarah Marshall, about his breakup with Cardellini. It’s all much ado about nothing, folks, because he confirmed to the Los Angeles Times that the Mad Men actress was “a great girlfriend.”

Abbie Cornish & Ryan Phillippe

Abbie Cornish worked with then-married actor Ryan Phillippe in 2006 on the movie, Stop-Loss. While the movie was forgettable, it was the heat coming off the two co-stars that had everyone talking, especially because Phillippe was married to Reese Witherspoon at the time. 

Was the rumored affair the reason for the couple’s divorce? It’s hard to say even though Witherspoon called their split “very humiliating and very isolating,” per People. Cornish and Phillippe went on to date until 2010, so there’s definitely something to that on-set chemistry.

Michelle Pfeiffer & John Malkovich

Go back and watch 1988’s Dangerous Liasions, and tell me the heat between Michelle Pfeiffer and John Malkovich didn’t melt the screen. You had to throw water on everyone around you because the flames were everywhere.

So did this on-screen scorcher carry into real life? Hmm, it’s been reported that Malkovich cheated on his then-wife Glenne Headley with Pfeiffer, but then years later he basically denied that anything ever happened with them — or that they even worked together. 

“It’s hard to believe Michelle Pfeiffer ever said hello to me — not that she’s not memorable, God knows. But I sort of blacked it out,” he told Esquire two decades later. “What I’m trying to say is, when I think of the other person, I don’t think of me as involved with them. They’re uncorrupted by me. As if they were never troubled by my existence.”

We call that rewriting history, my friend. 

Amanda Bynes & Channing Tatum

The level of cuteness between Amanda Bynes and Channing Tatum, seen in a 2006 interview for Fuse’s Daily Download, is off the charts. They were promoting She’s the Man and they were flirtatious with a capital “F.” (Watch her call him “Chan” — we love it!) There’s no denying that there was at least a crush going on.

Nothing has ever been confirmed or denied by these two, but Tatum has been supportive of Bynes after years of struggles with her mental health.

“I love her,” he told Entertainment Tonight in 2018. “I’m so happy she’s killing it again and just back on the right. She’s so talented and so special. She’s been doing it… I mean, I think it’s so impossible when you start at such a young age to keep perspective. It’s tough.”

Paris Hilton & Chad Michael Murray

You are going to need a scorecard for this entire story. Back in 2006, Paris Hilton — yes, she acts — and Chad Michael Murray starred in House of Wax together. Hilton was dating Backstreet Boy Nick Carter and Murray was married to Sophia Bush. There were rumors that the two co-stars enjoyed each other’s company beyond the pages of the script. 

No one confirmed nor denied any of the tabloid stories until Carter opened his big mouth to Ryan Seacrest on KIIS FM in Los Angeles. He claims that not only did Hilton and Murray cheat, he says his act of revenge on his then-girlfriend was to hook up with Ashlee Simpson.

Does that make this alleged situation a love pentagon? 

Carrie Fisher & Harrison Ford

For Star Wars fans, this is a dream come true. Who doesn’t love Princess Leia and Han Solo together in real life? Record scratch — Harrison Ford was married to first wife Mary Marquardt when he was allegedly involved with Carrie Fisher. 

Now, Ford has never been one to kiss and tell, but Fisher blabbed about the supposed three-month affair in her memoir, The Princess Diarist. “It was Han and Leia during the week, and Carrie and Harrison during the weekend,” she wrote in the memoir, via E! News. It’s probably not the news Ford wanted to reveal, but he’s keeping this secret close to the vest — forever.