Lois & Clark: The New Adventures of Superman (1993)

S04E04 Soul Mates

Just as the newly married couple prepares to deepen their bond, time traveler H.G. Wells appears unexpectedly, bearing alarming news. He warns them of an impending curse that poses a serious threat to their union. With their future hanging in the balance, the couple must confront this unforeseen challenge and find a way to avert the impending doom that could tear them apart before they truly begin their life together.