Reunion Finale: The couples are back on the couch for one final time to take a look at the most controversial videos of the season.

Reunion Dinner Party. All the participants return for one final dinner party and put to rest any unfinished business.

At the final Vow Renewals, the last couples must decide whether or not to continue life with their partners after the experiment.

At the Vow Renewals, the remaining couples must decide whether or not to continue their relationships after the experiment.

At the final dinner party, the Honesty Box comes out and causes cracks in even the strongest couples.

On Boys and Girls' Night, everyone is back for a final night out with explosive consequences.

The remaining couples have their final dates ahead of their Vow Renewal ceremonies.

The remaining couples set each either tasks ahead of Final Dates and not everyone is happy about it.

The final Commitment Ceremony will decide which couples go to Vow Renewals and choose to continue life together after the experiment.

The Dinner Party is hit by a scandal which sees one bride's past outed by another.

The homestays bring some couples closer together, while others struggle.

Homestay week plunges the couples into the reality of what life would be like outside the experiment.

An explosive development at the Commitment Ceremony shocks the experts and rocks the experiment.

The feuds established at the week away spill over at the dinner party.

The fallout from the previous night's drama continues to send shock waves through the experiment.

All the couples head off for a week away, with dramatic consequences no one sees coming.

The Commitmenrt Ceremony is hit by two storm outs and Alessandra has tough words for one bride.

The Dinner Party sees one bride's brutal take-down of her husband and another couple implodes.

A new development threatens to rock the experiment.

The new couples move in; the original cast meet the families, for better or worse.

During the Commitment Ceremony, one of the experiment's most controversial couples calls it quits.

The dinner party erupts as the new couples join the original group for the first time.

There's trouble in paradise as the new couples go on their honeymoons, and there's more wedding bells.

Two new couples join the experiment, but one bride throws her wedding day into chaos.

A highly charged Commitment Ceremony sees one bride deliver an emotional farewell to the experiment.

Simmering tensions spill over at the second dinner party, producing an emotional walk out.

Intimacy Week continues with some unexpected results.

Alessandra's Intimacy Week kicks off. Some couples thrive. Some struggle to connect with their partners.

The first Commitment Ceremony sees the experts deliver some hard truths to the new couples.

Confessions week continues, with some shocking revelations.

Confessions week. A new honesty challenge brings some couples to breaking point.

The first dinner party of the season. All the couples get to meet for the first time and one groom gets thrown under the bus.

The final two weddings. Is it love at first sight for one couple?

Drama hits the experiment as the Honesty Box is produced on the honeymoons with unexpected consequences.

The weddings continue as two more couples put it all on the line to meet and marry at first sight.

The next two couples walk down the aisle to meet and marry at first sight as Australia's most controversial social experiment returns.

Australia's most controversial social experiment is an intoxicating mix of love and drama. Features the bucks and hens' nights and the first two weddings.