Till Death - S4.E19

When Gina and Robert de Valicourt met 300 years ago, even Gina's suitors MacLeod and Fitzcairn had to admit they were destined for each other. Each century, as Robert and Gina renewed their wedding vows before their friends and fellow Immortals, their love grew stronger. But now their marriage is on the rocks. MacLeod decides it's up to him to reunite the once happy couple, and he enlists a very unwilling accomplice in his cunning plan.