In her book "Mercy," Jodi Picoult explores the complexities of marriage, emphasizing that relationships are rarely equal. She suggests that love is often unbalanced, with one partner typically investing more emotionally and practically than the other. The dynamics of love and partnership are shaped by these disparities, highlighting that personal effort and commitment are crucial for keeping the relationship strong.

Picoult illustrates how individuals may play different roles in a marriage, with one person often appearing to take on the burden of maintaining harmony while the other may benefit from their efforts without investing as much. This nuanced perspective sheds light on the realities of love and the dedication required to navigate the ups and downs of shared life.