The experiment has reached its halfway stage and an intimate dinner party in Sydney provides an opportunity for the couples to meet and compare their relationships.
The heat is high for these pressure-cooker relationships as the newlyweds move in together and begin to experience everyday married life. How will they fare as Mr and Mrs?
Another two couples experience a very unusual first date - their own wedding! One bride's feeling daunted but the final pair experience instant attraction.
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?