In this third and final episode are David and Nicky, from Cirencester. An accident 17 years ago during David's first marriage, left him paralysed from the chest down. However, three years ago, plucking up the courage to try online dating, David met Nicky and they began their budding romance.Now engaged to be married, the happy couple are determined to overcome any potential hurdles to reach their dream wedding day.The second couple, Ellen and Ian, from Lincolnshire, had spent 21 happy years together when their world was shaken as Ellen was diagnosed with terminal cancer. With their time together so precious, the couple finally decided to marry while Ellen's health was stable, which could have changed at any moment.With weeks to go before the wedding, Ellen develops a mysterious cough, adding extra pressure and emotion to their big day.