Psyche begs Aphrodite for another chance with Cupid; Aphrodite agrees on the condition that Psyche complete 4 tasks or trials; Psyche gets help on first 3; 4th task is on her own: retrieving some of Persephone’s beauty in a box (an urn or flask in some versions), involved Psyche going down to the Underworld and avoiding dangers (which she does) and resisting the temptation to take some of the beauty herself to make herself more beautiful (which she can’t resist). Psyche opens the box and is stricken with a deathlike sleep
Cupid misses Psyche and recovers from his wound (in some versions he is so startled trying to flee Psyche earlier that he stabs himself). He finally returns and revives Psyche with a kiss (see the famous sculpture by Canova). Both Zeus, king of the gods and Aphrodite give permission for Cupid and Psyche to be married
Cupid and Psyche have a daughter, Voluptas (Hedone in Greek mythology), the goddess of "sensual pleasures," whose Latin name means "pleasure" or "bliss." Thus, the child of Love and Soul is Bliss, happiness.