Alessandra Rampolla

Family and friends week challenges the couples once again, bringing some closer together, and proving too much for others, as a butt dial scandal rocks the experiment.

The fourth commitment ceremony in the experiment arrives, and while some couples celebrate their triumphs, others are held to account, and one couple will leave the experiment and their marriage for good.

Four couples, matched by three experts, meet as strangers and subsequently wed each other; after honeymooning and staying together for a month, they decide whether to further their marriage.

It's the penultimate Commitment Ceremony and all eyes are on couples Bronte and Harrison, and Claire and Jesse; fireworks erupt once Bronte and Harrison get on the couch; Claire and Jesse rehash the comments that led to their downfall.

Far from a luxury get away they hoped for, the couples' retreat tests marriages, and tensions between the girls and Bronte reach new heights.

On the third commitment ceremony, just days after the cheating scandal is revealed, tensions are high as many people are held to account by both the group and the experts.