Inside Prince Harry and Meghan Markle's Most Explosive Fight Yet – And How Their Kids are Caught in the Middle

The day was picture-perfect. On April 5, the Duchess of Sussex shared a sunny "Happy Easter" glimpse into life at the $14.65 million Montecito, Calif., estate she shares with husband Prince Harry – feeding chickens, collecting freshly laid eggs and watching their kids, Prince Archie, 6, and Princess Lilibet, 4, race across the lush lawn on an Easter egg hunt.

In one scene, Lili, in bunny ears, clutched a stuffed rabbit as she traipsed down a garden path. In another, Archie focused intently on decorating an egg.

But behind the carefully curated scenes, a far less idyllic reality is unfolding. With pressure mounting on every front – from their relationship to their careers to their children – insiders worry Harry, 41, and Meghan [Markle], 44, may be nearing a breaking point.

"People in their world are starting to have very real fears that the marriage will not survive," a source told RadarOnline.com. "The tension is getting worse all the time."

Scrutiny only intensified as the pair prepared to head to Australia in mid-April for a series of private, business and philanthropic engagements – their first trip Down Under in more than seven years.

The scheduled visit was set to begin just two weeks after flirty private Facebook messages Harry exchanged with Mail on Sunday journalist Charlotte Griffiths were made public on March 31 as his unlawful information gathering court case against the outlet's publisher, Associated Newspapers Limited (which has denied his claims), wound down in London.

While Griffiths playfully nicknamed the royal "Mr. Mischief" and praised their "fun weekend of naughtiness" in the countryside in the 2011 and 2012 exchanges, Harry – who claimed he cut off contact after learning she was a reporter – told her, "I WISH I was there sugar," and "I[I] miss our movie snuggles," even signing one message "Mwah xxx."

Some believe the shift is intentional, with speculation Meghan is pushing back in her own way by sharing more frequent peeks at the children – and more of their faces – despite years of keeping them out of view. That issue, says the source, is feeding a question that's long haunted the couple: Is this an equal partnership?

"Meghan is very much the boss in the relationship. She controls almost every aspect of Harry's life both personally and professionally," said the source. "And the way she's bulldozing ahead with putting the kids on social media is a prime example of Meghan doing what she wants, whether Harry likes it or not."

He most definitely doesn't. "It's triggering. As a kid, he hated it when he and [brother Prince William] were forced to pose for photographers during their private moments," said the source. "The fact that his own kids are now being trotted out by Meghan in a similar fashion is not OK with him, but ultimately, what can he do? This [is] how Meghan controls him."

As Daily Beast royal editor Tom Sykes pointed out in his April 6 The Royalist column on Substack, the former Suits actress is increasingly incorporating her children into her public image.

They've become, he wrote: "A central plank of Meghan's public myth building. Every new post featuring Archie or Lilibet deepens the sense that the Sussex children are being folded into a public brand architecture built on attention."

Some observers have also noted the posts – particularly when tied to Meghan's As Ever brand – echo the playbook of social media mom influencers, where family life becomes a product. That perception, said the source, is only fueling tensions behind closed doors. "Meghan has really changed in Harry's eyes," said the source.

"The Meghan he fell in love with had higher aspirations. He finds it pretty appalling that Meghan seems hell-bent on being this momfluencer character."

It's all coming to a head. Just weeks before Meghan's Easter post, a blistering March 17 report from Variety raised fresh questions about the couple's standing in Hollywood, describing mounting frustrations behind the scenes at Netflix and suggesting their once-promising entertainment empire may be faltering.

Their initial deal – reportedly worth around $60million – was downgraded to a first-look arrangement last year, while the duchess' With Love, Meghan series saw declining ratings after its initial success and now will only return as seasonal specials.

In early March, the streaming giant and Markle also ended their year-long partnership in her As Ever brand, though both sides insisted the move was planned. One insider quoted in the report claimed: "We're done."

Both Netflix and the couple's camp have pushed back strongly, with reps and Markle's lawyer calling the claims false and executives confirming the couple has multiple projects in development.

Yet the perception of waning industry support has added yet another layer of pressure, making it feel as if "their living and working situations are rapidly becoming untenable," said the source, with Meghan moving forward with her Hollywood ambitions and Harry leaning further into his beloved philanthropy.

"Harry doesn't understand or enjoy the culture or mentality of Hollywood," adds the source, and "he's fed up" with the constant drama.

He's also grappling with a very different pull – toward home. As RadarOnline.com has previously reported, the British army vet has been exploring ways to repair his relationship with his cancer-stricken father, King Charles III, 77, and in recent months learned he could soon regain government-funded security in the U.K., potentially paving the way for a return with Markle and their children.

Markle, however, is far less enthusiastic. While she supports Harry's desire to reconnect with his father, sources have long said that's where her willingness ends, especially as a wave of new royal biographies has only revived painful narratives.

In Betrayal: Power, Deceit and the Fight for the Future of the Royal Family, which came out March 26, author Tom Bower claims Meghan was seen as "a divisive agent" and a threat by William, 43, and his wife, Princess Kate, 44, while Queen Camilla, 78, allegedly griped to a friend, "Meghan's brainwashed Harry."

Meanwhile, in Queen Elizabeth II: A Personal History, royal historian Hugo Vickers alleges that Harry was "reluctant" to leave royal life in 2020 and suggests the prince had "bitten off more than he could chew" in marrying Markle, who the author paints as controlling.

For Markle, it all reinforces what she's long feared – that any return to the U.K. would mean "walking back into the lion's den," as a source previously told RadarOnline.com.

While Markle remains wary of reopening old wounds, Harry is feeling increasingly stuck.

"He knows his brother wants nothing to do with him and that things will only get worse once William ascends the throne," added the source. "Harry is dreading the future and hating his current reality – that's the brutal truth."