No one saw Rachel and Steven becoming the couple at the heart of an X-rated scandal on Married At First Sight Australia — but MAFS has a habit of delivering the unexpected.

Explosive unseen footage aired during the fourth episode of MAFS: After The Dinner Party (now streaming on Stan) has thrust Steven firmly into the spotlight, revealing his role in the drama that led to Bec’s now-infamous crude toast.

The never-before-seen clip, captured just moments before Bec’s shocking joke, shows Steven casually joking with her about the most explicit details of his intimate life with Rachel. The conversation was light, private… or so Steven thought.

Watching the footage back for the first time, Steven was visibly shaken.

“Watching that back, I feel mortified. I’m even shaking just seeing that back,” he admitted, clearly rattled by the replay.

Rachel, sitting beside him, finally understood why Bec had felt comfortable enough to make the joke in front of the entire group.

“I thought I was supported and I thought my partner had my back,” Rachel said, her voice heavy with disappointment. “You essentially gave a green light to it.”

Host Brittany Hockley didn’t hold back, pointing out that it now appeared Steven had let Bec take the full blame for something he had also been part of.

Steven pushed back, insisting he never gave Bec permission to repeat anything in front of the whole group.

“No, but it gives someone the impression that we are joking about this and that it’s light-hearted,” co-host Laura Byrne fired back.

The revelation has completely shifted the narrative around the retreat drama. Rachel now sees the situation in a very different light, especially after Gia and Juliette were feeding her information and stirring the pot between her and Bec.

Steven did apologise for his words, but maintained that his private chat with Bec still didn’t give her licence to share it with everyone.

The episode also featured more fireworks: Danny and Scott finally came face-to-face after their friendship blow-up, while fresh unseen footage painted a very different picture of Scott and Gia’s so-called “power couple” marriage.

If you want the full story — including every jaw-dropping moment of the unseen footage — you can stream MAFS: After The Dinner Party Episode 4 right now on Stan.