The first two couples paired up by the relationship experts meet at the altar for their wedding ceremonies. Will romantic sparks fly when they lock eyes for the first time, or could doubts creep in?

Another two couples experience a very unusual first date - their own wedding! One bride's feeling daunted but the final pair experience instant attraction. And all four couples go on their honeymoons.

The heat is turned up on the pressure-cooker relationships as the newlyweds move in together and begin to experience everyday married life. How will they fare in their first few days as Mr and Mrs?

The experiment has reached its halfway stage and an intimate dinner party in Sydney provides the first opportunity for the four couples to meet and compare how their relationships are working out.

With one week to go until the newlyweds have to make their big decision, some of the couples manage to visit the in-laws, improve communication and strengthen relationships but one pair are struggling.

The social experiment is over and the relationship experts gather to hear the couples make one of the biggest decisions of their lives. Will the participants opt to stay married or ask for a divorce?

The expert team of matchmakers pair up the first two couples and the cameras follow the preparations for their big day. How will they react on meeting for the first time at the wedding ceremony?

Two pairs of newlyweds wake up in their beds for the first time as husband and wife. The last two couples are matched up by the experts and all eyes are on them as the wedding ceremonies begin.

The four pairs of newlyweds spend a week getting to know each other on their honeymoons. An expectation of romance and intimacy hangs in the air, but not all of the couples are comfortable together.

After knowing each other for only a week, the couples move in together. There's nowhere to hide and emotions run high as they grapple with sharing their personal space on an intimate level.

A dinner party occurs, attended by all four pairs of newlyweds. The couples compare the strength of their own relationship with those around them, but no one is prepared for the fireworks that ensue.

Decision day is just over a week away and the couples are feeling the pressure as they weigh up the strengths and weaknesses of their union. They also face the test of a weekend with the in-laws.

With just 72 hours to go, the couples temporarily separate and avoid all contact with each other while they seek the counsel of friends and family. The stakes are high and hearts are on the line.

The experiment comes to an end as the newlyweds decide: will they stay in their relationships or cut their losses? Two months later, cameras revisit participants to see which pairs are still together.

We meet our first four singles and follow them and their families as they prepare for the biggest day of their lives – a day that should see them say "I do" to a complete stranger.

A day earlier, our first two couples were complete strangers. Now, the morning after the wedding, they wake up together to their new reality as husband and wife. Meanwhile, six more singles come together to comprise our final three couples.

Four weddings down, one to go, and it looks like our expert matchmakers are on a roll as couples three and four get hot and heavy at the wedding reception. But is it love or lust at play?

Following on from the intensity of the weddings, the honeymoon is the first time our couples will have spent any real time alone together, and they will all be asking themselves: is this relationship really going to work?

Our couples are set to return from their honeymoons and enter the third phase of the experiment: moving in together. But pressure is mounting on some couples as they grapple with trust issues compromise.

This season's dinner party will push everyone to the brink. Until now, our couples have existed in a vacuum without contact with one another. Tonight this will change as they size each other up and question the strength of their own relationship.

Our three final couples may have survived the dinner party, but no one has emerged unscathed. Cracks are beginning to appear everywhere, even among the most unlikely of couples. How will this affect the couples as they meet their in-laws?

It's crunch time for our couples as they meet with our expert matchmakers and reveal whether or not they will continue their relationship beyond the experiment. It's a decision that will change their lives forever. Who will stay and who will go?

Australia's most controversial social experiment is back. More couples and more pressure than ever. Tonight there's two big weddings, and for the first time the brides and the grooms get together at separate Bucks and Hens nights.

Australia's most controversial social experiment is back. More couples and more pressure than ever. Tonight two weddings and a big secret is revealed that will shock one bride.

Australia's most controversial social experiment is back. More couples and more pressure than ever. Tonight two weddings. Is one groom ready for a culture clash he didn't see coming?

Tonight, Lauren the single Mum looking for love a second time around has a big decision to make and divorced Dad of two, John, faces an emotional day for him and his daughters.

Tonight, it's the final weddings as identical twins Sharon & Michelle walk down the aisle together in the biggest wedding in Married At First Sight history.

Tonight, the runaway bride is confronted for the first time with her jilted husband as the other couples come to terms with married life on their honeymoons.

More couples and more pressure than ever. Tonight, sparks fly at the first weekly dinner party. Who is flirting with who and who storms out?

The first weekly commitment ceremony. Who will choose to stay and who will leave the experiment plus a shocking revelation that will rock everyone.

The couples move into an apartment building together and a twist in the experiment that no one sees coming.

The second dinner party erupts as guards come down and people start to reveal their true feelings.

The fallout from the dinner party rocks the commitment ceremony as the couple have to decide whether to stay or leave the experiment.

The wives face a reality check as they leave their apartments for a homestay back among their husbands' family and friends and not everyone likes what they find.

An emotionally charged commitment ceremony pushes Simon to breaking point as the couples have to decide whether to stay or leave the experiment.

The husbands face the reality of life with their wives as they take on a homestay with their bride's family and friends with some unexpected results.

The remaining couples gather for another emotional Dinner Party fresh from their homestays with Cheryl and Susan confronting an unresolved issue.

Tonight, with their relationship on the rocks will Andrew and Cheryl survive the Commitment Ceremony? And has Anthony gone too far this time.

Tonight, the couples families finally come face to face and what happens at the boys' night that upsets Cheryl.

Tonight, another explosive Dinner Party when Sean breaks ranks and reveals to everyone what really happened at the boys' night.

The final weekly commitment ceremony before the couples face Vow Renewals. Cheryl & Andrew come together after their explosive fallout at the last dinner party. Jesse pours out his heart to Michelle and one high profile couple call it quits.

The remaining couples go on their final dates before the vow renewal ceremonies when they will decide whether or not to leave the experiment together or go their separate ways.

The final dates continue before the vow renewal ceremonies where the remaining couples will decide whether or not to leave the experiment together or go their separate ways.

The final Dinner Party. Each couple comes under scrutiny as they open up in front of the others on the state of their relationships as they head towards their Vow Renewal ceremony.

The remaining brides and grooms return home to deliberate on whether or not to continue with their marriages after the experiment and the first Vow Renewal ceremonies begin.

Tension builds in the lead-up to the remaining vow renewal ceremonies which bring some unexpected results.

The last two Vow Renewal ceremonies. After their issues with distance and lifestyle will Sean and Susan commit to a future together and what will Anthony and Nadia decide?

The couples who have renewed their vows return home and face the reality of a long distance relationship.

The couples who have renewed their vows come to terms with the reality of a long distance relationship.

The Dinner Party. All 20 participants who joined the experiment come together for one last emotion-charged dinner party.

The participants all face the experts for a confronting look at their journeys over the course of the experiment. Jonesy and the boys are finally played the video of what really happened at Boys' Night.

Australia’s most controversial social experiment is back. The first two couples walk down the aisle, but will one bride’s brother’s stand in the way of her dream?

This episode features two fairy-tale weddings with two very different brides, and Australia’s most nervous groom.

The weddings continue in Australia’s most controversial social experiment. One bride must pass the test of the mother-in-law with the power to break up her wedding.

The first six couples arrive for their honeymoons. For some, love starts to bloom, while others find trouble in paradise.

Last season’s favourite groom John Robertson returns for a second chance at love. And will Troy meet his Barbie dream girl at the altar?

The show’s first millionaire groom puts his faith in the experts, and single mum Gabrielle must find the courage to share her secret with her new husband.

It’s the final wedding of the season and the honeymoons continue. Can Troy win over his sceptical bride? John hits a hurdle on his honeymoon.

The first dinner party of the season and all 11 couples meet each other for the first time but one bride has her eye on another husband.

With love already blooming for some couples, the group is shocked at the first Commitment Ceremony when two brides get blindsided by their husbands.

The fallout from last night’s dramatic Commitment Ceremony continues to be felt as the couples move in together, and the first signs of the scandal that will rock the experiment.

A shock split that no one saw coming, and ‘yes week’ brings some couples closer together, while others struggle following orders from their partners.

A secret pact at the dinner party sets up a betrayal that will split the group.

A shock split that no one saw coming and YES week brings some couples closer together while others struggle following orders from their partners

Grooms homestay. The brides spend the week in the homes of their husbands. Some couples are brought closer together but for others it's a huge reality check.

The grooms' homestays continue with the fallout from the last Commitment Ceremony still causing grief.

The Dinner Party reunites all the couples for the first time since last week's scandal at the Commitment Ceremony and some of the experiment's biggest characters come under attack in a brutally honest get together.

Two couples leave the experiment in another dramatic Commitment Ceremony that also sees love declared.

Brides’ homestays. Grooms spend the week back in the real world at their wives’ homes. Some couples are brought closer together, while others struggle with the reality check.

Brides’ homestays continue. Sarah and Telv have a major breakthrough in their relationship that brings them closer than ever.

The dinner party puts Dean and Tracey back in the spotlight, and Sarah makes a big announcement.

The second last Commitment Ceremony. One groom is shocked by his bride’s decision, while love continues to bloom for Australia’s favourite couples.

Meet the parents week. In-laws from both sides come face-to-face. Could this be the beginning of the end for Sarah and Telv?

Boys’ night. A get-together with the boys leads to a world of hurt for some of the couples.

Dinner Party. The grooms are confronted with details of the Boys' Night and Charlene spares no one with her outrage.

The final commitment ceremony: the remaining couples must decide whether or not they want to renew their wedding vows and pursue a life together outside the experiment.

The couples are split and individuals are teamed up with another partner to discuss their relationship status. Two of the experiment’s biggest personalities face off.

Couples have their final dates before they go home to decide whether or not renew their vows.

At the final dinner party, the remaining couples are tested to their limits with the Honesty Box.

The Vow Renewals Part 1. The remaining brides and grooms declare whether or not they want to continue life as a couple outside the experiment.

The Vow Renewals Part 2. The remaining brides and grooms declare whether or not they want to continue life as a couple outside the experiment.

The Reunion Part 1. All 11 couples reunite for one last dramatic Dinner Party.

The Reunion Part 2. All 11 couples sit and face the experts as they watch video for the first time of the good, the bad and the ugly of their life in the experiment.

The Hen's & Buck's parties are back then the first two couples walk down the aisle but will one bride's brother stand in the way of her happiness?

Two more couples matched by the experts are ready to walk down the aisle, but one best man gives an embarrassing speech that leaves the bride's family shocked.

The weddings continue in Australia's most controversial social experiment but is it the fairy tale one bride was hoping for?

The first six couples arrive for their honeymoons. For some, love starts to bloom while others find trouble in paradise.

The weddings continue, with 29-year-old virgin Matt heading to the altar. Plus, the experts try to find the perfect match for Sam who says his looks are getting in the way of love.

The final two weddings. Australia's most controversial social experiment has never seen a bride like Ines. Have the experts found a groom that can tame her?

The last 4 couples set off on their honeymoons. How will Matt cope with the honeymoon with his virginity on the line?

The first Dinner Party of the season. All the couples meet for the first time with drama on the menu but where is the runaway groom?

The first Commitment Ceremony. Who will write STAY and who will write LEAVE? The experiment is rocked by a shocking outburst.

Moving day. The couples move into their new apartments but one new bride & groom head straight to counselling after an explosive Commitment Ceremony.

Yes Week. One partner in each couple takes all the power for one week and sparks one amazing revelation.

As `yes week' draws to an end, it's time for the second dinner party - and the table is set for servings of intrigue, betrayal and dangerous liaisons.

The couples are thrown into the second commitment ceremony, where shock decisions are made, surprises are revealed and there are plenty of tears.

The couples head off on a group holiday to the Gold Coast, where the first L-word of the series is dropped, and a scandalous affair begins.

Elizabeth returns from her absence to join the couples on the Gold Coast, as the boys and girls separately hit the town and catch up.

On the Gold Coast, the brides are still reeling from the explosive Girls' Night which is followed by a dramatic dinner party full of rumours, lies, and explosive secrets.

The shocking commitment ceremony rocks the show. Rumours and gossip spill out and the spouses demand answers. Secrets are revealed and lies exposed.

After an intense commitment ceremony that saw two couples leave, the experts announce they will be introducing two new couples halfway through the experiment.

The new arrivals set off on their honeymoon, while the original couples celebrate their one-month milestone. A new rumour drives Cyrell into a heated confrontation with Martha.

The arrival of the new couples at the dinner party surprises the group; Jess sets her sight on another husband, and his wife isn't too happy about it.

The new couples hit the commitment ceremony for the first time and John is forced to stop the verbal attack by one bride on her new husband.

It's been over a month since the couples first met as complete strangers at the altar; they move into the next challenging part of the experiment, the husband's homestays.

The grooms homestays continue, and the wives are immersing themselves in their husband's world, leaving some couples stronger than ever, while others are pushed to breaking point.

The dinner party commences once again with explosive results, as another cheating scandal unfolds. Plus, one of the original couples takes the next step in their relationship - holding hands.

It's another explosive commitment ceremony for the couples; self-sabotaging behaviour, shocking truths and devious ulterior motives that have never been seen before.

Some couples blossom as they dig deeper during the brides' homestays, but some stumble meeting friends, family and their partner's expectations.

As the homestay's continue, the families of the brides put the marriages, and husbands, under the scope. Meanwhile, Susie's father steps in and tries to fix her marriage.

A heated confrontation at the dinner party lands one young hopeful in hot water. Plus, tensions continue to rise after a second week of home visits.

Emotions run high heading into the next commitment ceremony. There are big leaps as some are falling for each other, others are moving in, and two couples split.

Marriages come under the microscope as the couples have a sit down meal with their loved ones. But there is no holding back from the family members.

Things get wild during a night out where scandalous secrets are revealed and gossip leads to a confrontation that threatens to change everything.

Ning strives to get to the bottom of Jessika's rumours, Mike confronts the situation as tensions reach new heights in the lead up to their final commitment ceremony.

It's the final commitment ceremony and the couples speak to the experts for the last time. With emotions high, the experts help put the pieces back together.

The couples swap partners for an insightful date. Jules gives Mark some advice on his love-life with Ning, but Mike and Jessika once again rehash the events from the dinner party.

Jess and Dan settle into domestic bliss; Cam whisks Jules off to relive their wedding day; Mike takes Heidi for a date on the high seas, but he's forgotten how seasick she gets.

The final dinner party heats up as the couples answer the honesty box. The couples are forced to confront the big issues in their relationship.

The remaining couples have been through the trials and tribulations and now face the ultimate test of their relationship, the final vows.

Ten weeks after first meeting, it's time for the couples to make their final vows. It's a huge decision, as they need to decide whether to continue their marriages, or part ways.

The end of the road is now for couple Mike and Heidi, as they prepare their final vow; they must decide whether to renew or leave.

All of the 24 participants return for a reunion dinner party, from Ines, to Sam, Lizzie, and Cyrell. Old friends come together again, while old feuds reach boiling point.

The experiment's participants come together for a video review of their time spent together, and learn the shocking truths behind some of the experiment's biggest rumours.

Australia's most controversial social experiment is back. Can 20 singles meeting & marrying at first sight find their happily ever after? Tonight the Hens & Bucks nights and the first couples walk down the aisle.

Australia's most controversial social experiment is back. Two more couples walk down the aisle looking for love.

Australia's most controversial social experiment is back. Has science found the right formula for the next two couples to be married at first sight?

Australia's most controversial social experiment is back. The first six couples head off on their honeymoons as they enter the next phase of their relationship.

Two more couples meet and marry at first sight, including one of the most anticipated weddings of the season.

The final two weddings of the experiment bring one drama-filled reception.

The final four couples head off on their honeymoons looking to take their relationships to the next level.

The first Dinner Party where all 10 couples get to meet for the first time.

First Commitment Ceremony. Couples must decide whether or not to stay in the experiment for another week.

Intimacy week. The couples enter the next phase of the experiment and move into their apartments and work on their physical & emotional intimacy.

Intimacy Week continues but some couples are struggling with the concept.

The second dinner party kicks into gear as the group dynamic causes some couples to thrive and others to struggle.

The second Commitment Ceremony. Who will stay and who will leave the experiment?

Meet the Parents. The couples get together with each other's families & friends and not everyone is happy with the matches.

Meet the Parents continues. The couples get together with each other's families & friends and not everyone is happy with the matches.

The first big scandal of the season hits the Dinner Party.

Who will leave and who will stay in the biggest Commitment Ceremony so far this season?

Another shock jolts the experiment.

Some couples are thriving while others are struggling as the pressure of the experiment starts to hit home.

The fourth dinner party of the experiment is shaken by a new revelation.

The fourth Commitment Ceremony brings out the first I Love You of the season.

Grooms Homestays Part 1. The brides travel back to their husbands home to see what life together might be like outside the experiment.

Grooms Homestays Part 2. The brides travel back to their husbands home to see what life together might be like outside the experiment.

Dinner party. Shock revelations stun the experiment and spark a big walkout.

A shock departure at the Commitment Ceremony rocks the experiment.

Brides' Homestays Part 1. The grooms travel back to their wives home to see what life together might be like outside the experiment.

The Brides' Homestays continue then fallout from the week away hits the Dinner Party.

The final Commitment Ceremony. The remaining couples decide whether or not to go to Final Vows, and make a decision with their partner on life outside the experiment.

The Girls' and Boys' Nights see the return of some familiar faces and with them comes drama.

Part 2 of Girls' and Boys' Nights and the remaining couples go on their final dates before their final vows.

The Final Dates continue. The last time the couples will see each other before final vows when they must decide whether or not to continue outside of the experiment.

The Final Dinner Party. The remaining couples face the experts' questions from the Honesty Box.

The remaining couples make their final vows to decide whether or not they want to be together after the experiment.

The remaining couples make their final vows to decide whether or not they want to be together after the experiment.

The Reunion Dinner Party. All the brides and grooms are back for a giant reunion dinner party.

Reunion Finale. All 12 couples face the experts for a final time for a look back at their time in the experiment with some explosive revelations.