A look back at the series about an experiment to create scientifically-compatible couples in the lab, revisiting those who made it to the end of the year and some of those that didn't. Why did it work for some, but not for others? The experts also explain how the science of compatibility worked to create all the couples that took part. When we last saw Kirsty and Andrew they were loved up on the beach in Newquay. As the New Year fireworks light up the night sky over the Thames did they go from strength to strength? We left Mel and Chris looking like a married couple on a romantic weekend in Edinburgh. As the Christmas presents were unwrapped had their love grown? Travis and Amanda had a stormy relationship. Have they kept seeing each other since their night of romance in a London hotel? Mandy and Stuart were drawn closer to each other by bereavement. As the New Year came were they still happily together?