One groom's surprise announcement might leave him stranded by a runaway bride, and a twice-married single mum hopes to find love that will last.

The next phase of the experiment begins, as the first four couples embark on luxury honeymoons in the sun.

A brand-new chapter of the experiment begins for all of the couples, as they gather together for their first dinner party under the watchful eye of experts Mel, Paul and Charlene.

Another four strangers take the ultimate gamble on love and tie the knot with a total stranger. While one bride gets more than she bargained for, an overprotective friend threatens to spoil the big day for a groom and his new husband.

It’s Yes Week... the newly-weds explore power play in their marriages and move in together

Important decisions lie ahead at the Commitment Ceremony... who will stay or leave?

The return of the experiment to see whether science can help people fall in love, with experts Mel Schilling, Paul C Brunson and Charlene Douglas ready to help 16 hopeful singles find their perfect match. Before these strangers walk down the aisle, they get to celebrate their final night of freedom together at the ultimate stag and hen parties - where a surprise is in store.

Four more singles agree to marry a perfect stranger, but while one bride-to-be hopes to meet the woman of her dreams, another's high expectations could be a recipe for disaster.

The next group of newlyweds fly off to tropical climes, but while fun in the sun is on the cards for some, others find their first break away together far from blissful.

The couples have reached the first Commitment Ceremony, where they meet to discuss their marriages with the experts and also make a critical decision.

At the second dinner party, two grooms arrive alone, and the Honesty Box turns up the heat

Two new couples get wed... sparks fly for some, but there's second thot for others.

The final two couples in the experiment set off on their honeymoons.

It's the third dinner party, and newcomers are about to crash the party...

The experts deliver some tough truths to help the couples progress on their journey

It's Love/Hate week for the couples. Can they improve their honesty and communication?

It's the Couple's Retreat and as old feuds are reignited, a connection forms between a bride and groom... who aren't married to each other!

The drama of the Couple's Retreat continues, as marriages hit the rocks and one bride's worst fears are realised as a bombshell is dropped at the dinner party.

It's the penultimate Commitment Ceremony and the experts assess the fallout from the Couple's Retreat. But a huge curveball arises, leaving the experts stumped.

It's the all-important homestays and one half of the couple get a glimpse of their future in the outside world, with some serious grillings from the in-laws.

Celebrations at the dinner party are cut short as the Anonymous Letters assignment brings to light some uncomfortable observations for the couples. And a shocking confession from Jordan leaves Chanita with serious doubts about their future.

Thomas and the bridges head off on their homestays, where Jordan gets a grilling, Zoe and Jenna struggle to decide where they would live in the outisde world, and Adrian hears some harsh feedback from Thomas' mum and dad.

At Kasia's homestay, Kwame's in for a shock when he comes face-to-face with her lotal sisters. Back in London, the L-bomb gets dropped, and on a night out, an ongoing fued comes to an explosive conclusion.

It's the last Commitment Ceremony, and while some relationships are solid, others are shaky. All of the participants must make the most improtant decision to date: agree to go to the Vow Renewal Ceremony, or call quits on their marriage.

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