Epimetheus became Pandora’s husband in the Greek myth after Prometheus warned his brother.
Epimetheus was a Titan associated with hindsight, while his brother Prometheus was associated with forethought. Prometheus advised Epimetheus not to accept gifts from Zeus, but Epimetheus accepted Pandora when she arrived. Their marriage places Pandora inside the human world and sets up the opening of the jar that releases suffering.
The contrast between the brothers’ names is important to the story. Prometheus is commonly interpreted as “forethought,” and Epimetheus as “afterthought” or “hindsight.” Epimetheus acts without following the warning, and the consequences become clear only afterward.
Pandora and Epimetheus are not presented as a conventional romantic couple in Hesiod’s accounts. Their relationship functions mainly as a mythic explanation for how Pandora entered humanity’s world. Later Greek traditions connect their family with Pyrrha, who survives the great flood alongside Deucalion, but that later genealogy is separate from the core jar episode.