What is the dream Hermia had?
Hermia awakes from a dream in Act II, scene 2, in which a serpent was eating her heart while her lover, Lysander, sat simply smiling at her. This is the full extent of what is said about her dream. The meaning of it is never dealt with, but it seems to be a metaphor for the betrayal she will almost immediately experience at her lover Lysander's hand, as he is infected with the juice of the flower that Puck mistakenly squeezed into his eyes, thinking he was Demetrius. The juice of the flower caused him (and everyone into whose eyes it is squeezed), to fall in love with the first creature he saw upon awakening. In his case, the first person was Helena, and so he promptly forgot about his original love, Hermia, and, following the effects of the flower, promptly fell in love with Helena.