Near the end of Act IV Scene I, Demetrius says, "Are you sure that we are awake? It seems to me that yet we sleep, we dream.” Dr
eams are referred to throughout the play. What is the purpose of dreams in the play? Do the dreams reveal themes or advance the plot, or are they individuals’ interpretation of reality? Use evidence to support your answer.
Okay i have read the whole play and i can help you out.
The dreams in the play symbolizes reality and how they were switched around with lovers who they didn't really love. I don't have the textual evidence but i know this because i had the same question.