A shocking chain of events unfolds in EastEnders as Kat Slater’s secret business deal comes to light, leading to emotional fallout, a spontaneous proposal, and a devastating rift in the Slater family.

This week, Kat is blindsided when Cheeky reveals that her mysterious new business partner in the limo service venture is none other than Harvey. The unexpected partnership wasn’t something Kat wanted—and her reaction says it all. Furious but reluctantly pragmatic, she and Alfie decide to try and make the best of a bad situation. But Kat’s anxiety rises at the thought of Jean and Mo finding out, knowing how close Jean still is to Harvey following their difficult split.

Alfie, in his usual optimistic way, encourages Kat to be upfront with Jean. When Kat goes to deliver the news, she sees firsthand that Jean is still nursing heartbreak over her breakup with Harvey. Overcome with guilt and unsure of how to navigate the sensitive situation, Kat decides to keep quiet, putting off the conversation indefinitely.

In the meantime, Kat and Alfie find themselves swept up in the spirit of their new venture. A promotional wedding-themed photoshoot sparks something deeper in Alfie, and he begins to think seriously about proposing—again. He confides in Linda, admitting he wants to marry Kat for real, despite it being the third time he’s considered tying the knot with her.

Spurred on by the moment, Alfie goes all in. During the shoot, he delivers a heartfelt proposal to Kat, telling her he wants to grow old together. Touched by his sincerity and charm, Kat’s initial hesitation melts away. She agrees, and the pair become officially engaged—again.

Their celebration is anything but conventional. They march into The Vic and, in typical Kat-and-Alfie fashion, boldly demand that Harvey and Kathy help foot the bill for their upcoming wedding. Surprisingly, the pair eventually agree to chip in.

Kat and Alfie then settle on a big, splashy reception during the photoshoot, with plans to officially get married a little further down the line. But before they can even toast their new future properly, wedding planner Kim insists they throw a joint stag and hen do to keep the momentum going. The pub soon fills with music, laughter, and flowing champagne.

But the celebration is about to come to a grinding halt.

Just as the festivities are underway, Jean and Mo return to Albert Square and are immediately surprised to learn of Kat and Alfie’s sudden engagement. Jean is particularly puzzled—how could Harvey know about the wedding before she did? Her curiosity quickly turns to suspicion. It doesn’t take long for her to dig deeper and uncover Kat’s secret business partnership with Harvey.

Confronting Kat at the Vic in front of stunned family and friends, Jean is furious—not just about being kept in the dark, but because Kat is now tied to the man who broke her heart. When Kat attempts to defend herself, tensions explode. She lashes out, accusing Jean of abandoning the family when Stacey needed her most. This personal jab cuts deep, and Jean doesn’t hold back. In a moment of raw anger, she slaps Kat across the face.

Her words are just as painful:
“You marry Alfie and change your name back to Moon. Because as far as I’m concerned, you’re no longer a Slater!”

With that, Jean essentially disowns Kat, cutting a deep emotional line through the Slater family that may not be easily repaired. What started as a moment of joy now sits in the rubble of fractured relationships, unspoken regrets, and bitter family conflict.

As the dust settles, one major question lingers:
Can Kat and Jean ever reconcile?
Or has Kat’s secret cost her more than she ever imagined?

With family drama erupting, business tensions rising, and a wedding hanging in the balance, next week promises even more drama on EastEnders. Will Kat fight for her place in the Slater family, or will her impulsive choices mark the end of a defining chapter in her life?