Who says go get thee to thy love as was decreed?

The phrase "Go get thee to thy love as was decreed" is spoken by the character Friar Laurence in William Shakespeare's play "Romeo and Juliet." He says this line in Act 4, Scene 1, urging Juliet to take action to reunite with Romeo after she takes a potion that will make her appear dead. The line encapsulates the theme of fate and the urgency of love that permeates the play.