Truth behind ‘It Ends With Us’ feud rumors: Justin Baldoni made Blake Lively ‘uncomfortable,’ sources say

Blake Lively and Justin Baldoni clashed on the set of “It Ends With Us,” with multiple sources telling Page Six he made her feel “uncomfortable.”

The pair star in the much-anticipated big-screen version of Colleen Hoover’s hit novel about a toxic and abusive romance, out Friday. But rumors have swirled this week as the two seemed to avoid each other at the movie’s Manhattan premiere Monday.

One industry source claimed that Baldoni, who also directed the movie, created an “extremely difficult” atmosphere behind the scenes for the entire cast.

And another industry insider said there were a few moments on set that made Lively, who is a producer on the project, feel “uncomfortable” about her postpartum body.

Lively, 36, joined “It Ends With Us” soon after giving birth to her fourth child with Ryan Reynolds, son Olin.

As photos leaked at the start of production, fans called out Lively’s “frumpy” costumes for her character, Lily Bloom — prompting Lively to delve into her own wardrobe for some of the looks, borrowing clothes from BFF Gigi Hadid and husband Ryan Reynolds and wearing her own jewelry.

Sources who have worked with Baldoni were quick to say the father of two would never intentionally set out to make any of his actors feel unsupported.

By the end of filming, however, there was apparently no love lost between the cast.

‘It Ends With Us’ director Justin Baldoni says Blake Lively should direct the sequel amid feud rumors

“It’s not just Blake,” added the industry source. “None of the cast enjoyed working with Justin …They certainly didn’t talk to him at the premiere.”

Lively and Baldoni did not pose with each other at the New York City premiere Monday night. Per the plans of Sony, the studio behind “It Ends With Us,” Baldoni hosted a screening in Chicago Thursday night, while Lively attended a red carpet event for it in London. She also attended a Denmark premiere Friday night without her director.

At the New York premiere, Baldoni, 40, arrived with his wife, Emily, who has a small role as a doctor in the movie. Lively, meanwhile, posed on the carpet with co-star Brandon Sklenar as well as her husband Reynolds and pal Hugh Jackman.

Sources said Baldoni sat in his one theater at AMC Lincoln Square with family, friends and execs from Sony and Baldoni’s production company, while Lively watched the movie in a different theater with her own guests, including sister Robyn Lively and her nieces and nephews.

Lively and Baldoni have also not appeared together to promote the movie.

Instead, Lively has given interviews with co-star Jenny Slate, appearing on the “Today” show Monday, as well as filming an interview for CBS “This Morning” with Sklenar.

Things on set become so difficult that sources told us Baldoni may not return for a possible sequel, even though he owns the rights to Hoover’s 2022 follow-up, “It Starts With Us.”

Lively signed up for the new movie after Baldoni, who found fame in the CW show “Jane the Virgin,” bought the rights to the book via his production company, Wayfarer Studios.

The company is named after Baldoni’s religion.

Blake Lively lets emotional young fan wear her over-the-top coat at ‘It Ends With Us’ London premiere

“‘Wayfarer’ stands for the journey of the soul,” Baldon told RogerEbert.com recently. “It’s named after the Wayfarer in a book called ‘The Seven Valleys and the Four Valleys,’ which comes from the Baha’i Faith, which is my faith.

“It’s the journey of the soul, trying to figure life out. Whether you are a believer in God or whether you’re spiritual — whatever you are — it’s that journey of just trying to understand the world around us and yourself in the process.”

Baldoni bought the rights to “It Ends With Us” back in 2019.

He told Variety how his book agent referred the novel to him in 2019, when it had already sold a million copies. “It was sexy, and it was romantic and mysterious,” he said. “By the end, I was sobbing real snot tears.”

“I was very protective of this book,” author Hoover told Variety, revealing that she rejected several offers before Baldoni’s. “But then I got an email from Justin that was really heartfelt, and I felt like he understood the book and he understood the importance of people needing to see it on screen.”

While the movie has not yet gotten the green light for a sequel, Baldoni, who plays Ryle Kincaid, has already said he’s not sure he’s up to the task of directing another one.

At Monday’s NYC premiere, Baldoni told Entertainment Tonight , “I think that there are better people for that one … I think Blake Lively’s ready to direct, that’s what I think.”

Lively has said she put her heart and soul into the movie, while Baldoni told People, “She’s a creative force, she’s an executive producer on the film, and she is so brilliant.

“And I believe that her performance is going to help so many women feel seen and showcase this unique experience in a way that I don’t believe I’ve seen in another film.”

CLICK HERE TO SUBSCRIBE TO PAGE SIX DAILY FOR MORE CELEBRITY NEWS

Lively will do battle this weekend with husband Reynolds, whose new film, “ Deadpool and Wolverine ,” is currently at No. 1 at the box office.

“It Ends With Us” is projected to earn a solid $25 million to $35 million on its opening weekend, according to Variety.

Baldoni spoke out in a headline-grabbing TED talk in 2017 amid the downfall of now-convicted rapist Harvey Weinstein and the explosion of the #MeToo movement.

He asked men in the audience, “Are you brave enough to be vulnerable? Are you strong enough to be sensitive?”

Baldoni also hosts a podcast called “Man Enough,” on which he urges men to lean into their emotions and not shy away from therapy, and has written two books, “Man Enough: Undefining My Masculinity” and the children’s guidebook “Boys Will Be Human.”

Wayfarer Studios asked the nonprofit organization No More, dedicated to ending domestic violence and sexual assault, to take an advisory role during the development and production of “It Ends With Us.”

Variety also reported that Baldoni and Lively also worked with both an intimacy and a stunt coordinator when filming their scenes of domestic violence.

“What was important for me was that the abuse comes from Ryle’s insecurity — from a deep feeling that he wasn’t enough,” Baldoni said. “Showing that allows the movie to not have an archvillain. He’s not this mustache-twirling bad guy; he’s a guy with deep pain and deep trauma who makes terrible decisions that are never acceptable or excusable in any situation.”

We have reached out to reps for Lively and Baldoni for comment.

For more celebrity and entertainment news, visit pagesix.com.