Peter Quince, the carpenter, and his cohorts put on the play "Pyramis and Thisbe" in order to entertain and honor Theseus and Hippolyta's wedding.  The play is a Romeo and Juliet type comi-tragedy where the two are forbidden to see each other and are forced to kiss one another through a wall where they meet each night to talk and swear their love.  Since it is a play about true love, meant to be performed at a wedding, and the story going on around them is one of a love triangle based on magic and trickery, perhaps it is meant to teach all who see it that true love conquers all.