Jack Worthing is a central character in Oscar Wilde's play, "The Importance of Being Earnest." He is a young man who leads a double life, presenting himself as a responsible guardian in the country while adopting the persona of "Ernest" in the city. This dual identity allows him to escape societal expectations and pursue romantic interests. Jack is in love with Gwendolen Fairfax, who is unaware of his true identity. Throughout the play, his struggles with honesty and social conventions highlight themes of identity and the absurdity of Victorian society. His character ultimately seeks to reconcile his two lives.