Married At First Sight's John Aiken reveals 'sickening twist' set to rock 2025 series: 'Never done before'

Married At First Sight 2025 is set to take things to a whole new level with a jaw-dropping twist that has already left next year's series' participants reeling.

Daily Mail Australia can reveal that season 12 will be rocked by a shocking new task that completely blindsided the cast, leaving them questioning their decision to appear on the show.

Sources close to the show reveal the challenge was introduced in the early hours of the morning days before the show wrapped.

Cast members were woken up, separated from their partners and handed an envelope containing a cryptic invitation to participate in what was described as a 'f**ked up' task.

Each participant had to make their own decision, entirely unaware of what their partner would choose.

Speaking to Daily Mail Australia at the Channel Nine Upfronts on Thursday, expert John Aiken cryptically teased the dramatic twist.

'We can't give you exactly what it is, but what we can say is at Married At First Sight, what we are always trying to do is just give the viewers something a little different,' he shared.

'And also the participants, so they don't know what's coming. This year, as it gets closer to the end, and they're going to make a big decision about final vows, we throw a challenge at them that nobody's ever seen them do before.'

 'None of us knew what to make of it,' an insider revealed told Daily Mail Australia.

'When we opened those envelopes, it was clear that this was something totally different from anything we'd ever seen on the show.'

The twist has already sparked chaos among the participants.

Some flat-out refused to go through with it, drawing a line in the sand and standing their ground.

Those who decided to take part found themselves facing a fallout with other contestants, with a few instantly regretting their decision.

'Some of the contestants were visibly shaken. They didn't sign up for this, and you could see it on their faces as they realised what was at stake,' a source close to the production shared.

'Others seemed determined to push through, even if they weren't sure it was the right move.'

Next year viewers will be captivated once again by Married At First Sight's breathtaking weddings and honeymoons, the confronting commitment ceremonies and the dramatic dinner parties.

A teaser, exclusively obtained by Daily Mail Australia, kicks off with bride Lauren Hall admitting that she's got a 'resting b***h face'.

When asked by a producer how that made her feel, the outspoken bride admits that 'she didn't care' what people thought.

'I would describe the modern man as a wet fish,' she then explains.

Another scene shows mother-of-one Awhina Rutene admitting, 'My walls are up, I'm protecting my heart' during one of the show's dramatic dinner parties.

Elsewhere, bride Jamie Marinos admits she feels like she 'bamboozled' her partner Dave.

The pint-sized bride is then heard overwhelming her tattooed groom with questions on their wedding day.

'Do you go to Pilates? Do you go to raves? What siblings do you have? Do you go out much?' she asks, before she tells cameras: 'I think Dave is thinking, I hit the jackpot He seems to like it...' 

Speaking to cameras, Dave appears anything but impressed with his bride.

MAFS 2025 is already proving to be the most explosive season yet, with shocking revelations, unexpected connections, and jaw-dropping moments shaking up the experiment.

Married At First Sight returns in 2025 on Channel Nine.