With rumors rampant that Blake Lively and her “It Ends With Us” co-star Justin Baldoni had a thermonuclear feud, an on-set spy tells Page Six that the actress was visibly uncomfortable on the shoot.

Last week, the Hollywood Reporter wrote of Lively (who was a producer on the flick) and Baldoni (who was the director) that “there was a fracture among the filmmakers in the postproduction process.”

It seems the alleged divide resulted in two completely different cuts of the movie, one of which was reportedly commissioned by Lively, whose “more feminine edits” made the final cut.

But an experienced insider told us that the weird vibes seemed to have begun before post-production while the flick was still shooting, and that the “Gossip Girl” actress was noticeably antsy on set.

“The tension was so obvious,” we’re told.

“Once she was done with the scene she was really impatient, said, ‘Am I done? Can I go?,’ and as soon as they said ‘Yes,’ there was like a Blake-size hole in the wall.”

They added, “She was so outta there.”

The cinematic source adds that when she wasn’t champing at the bit to leave, Lively was staring at her phone between takes.

After a source told Page Six Baldoni made Lively feel “uncomfortable” about her postpartum body, TMZ reported that she felt “fat-shamed” after he mentioned her weight while filming.

The actor allegedly asked an on-set trainer how much Lively weighed before shooting a scene in which he had to lift her.

According to the outlet, he has a history of back issues.

And the site reported that there was tension between the co-stars over a kissing scene that the “Sisterhood of the Traveling Pants” star, 36, thought lasted too long.

There’s another strand of angst around the movie’s release because Lively has been accused of being too frothy in interviews about the flick, given that the movie is largely about domestic violence.

Lively’s rep didn’t get back to us.
In the midst of the swirling rumors surrounding Blake Lively and director Justin Baldoni’s alleged feud on the set of “It Ends With Us,” a behind-the-scenes observer has shed some light on the tension.

While reports have surfaced about a supposed split in creative vision between Lively, who also served as a producer on the film, and Baldoni during post-production, it appears that the unease actually began during filming.

According to a source close to the production, Lively showed visible signs of discomfort on set, with her restlessness evident to those around her.

The source recounted moments where Lively seemed eager to wrap up scenes quickly, often asking if she was finished and promptly making a hasty exit once given the go-ahead.

This behavior, coupled with her frequent distractions by her phone between takes, painted a picture of a star who was eager to disengage from the filming process.

Further friction reportedly arose when Baldoni allegedly made comments about Lively’s postpartum body, leading to accusations of “fat-shaming” by the actress.

TMZ even reported an incident where Baldoni inquired about Lively’s weight before a scene that required him to lift her, citing his own back issues as a concern.

The tension between the two escalated with disagreements over the duration of a kissing scene and Lively’s perceived lack of seriousness in promoting a film with such weighty themes as domestic violence.

As the release date of the movie approaches, the strain between Lively and Baldoni appears to have cast a shadow over the production.

While Lively has come under fire for her seemingly lighthearted comments in interviews about the film, critics have questioned whether her approach matches the serious subject matter at hand.

Despite the drama behind the scenes, the true impact of these conflicts on the final product remains to be seen. Will Lively’s more feminine edits and Baldoni’s directorial vision clash in the finished cut, or will the on-screen chemistry prevail over off-screen discord?

Only time will tell as audiences await the unveiling of “It Ends With Us” and the resolution of the behind-the-scenes drama. Stay tuned for more updates on this unfolding Hollywood saga.