Melanie Schilling

It's been one month since the experiment ended, and the participants come face-to-face with their ex-partners at the reunion dinner party. But for one couple, it's a celebration.

Australia's biggest social experiment comes to a close, but not before the experts hold behaviours to account one final time. Some never-before-seen footage leaves the room speechless.

The final and most radical phase of the experiment sees a huge twist. The brides and grooms now watch back on the footage of the final test, and some are shocked to their core.

As the halfway point of the experiment approaches, the couples attend the fourth dinner party; one marriage implodes in a shocking tirade that leaves everyone speechless.

It's the final dinner party and the group's last dramatic get-together before final vows.

Follows an eventful couples retreat, the newlyweds gather for the experiment's fifth dinner party, where tensions are likely to run high after their intense week away.