What do the sun and moon symbolize in Romeo and Juliet?

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In act 2 scene 2 of
Romeo and Juliet, Romeo says that Juliet is the sun. He goes on to describe the moon as
a jealous girl. He suggests the moon feels that the sun, Juliet, shouldn't be more
lovely than she is. Of course some of this is Romeo trying to figure out his own
feelings. His love for Rosaline has all but disappeared after seeing Juliet. according
to this scene, the sun represents Juiet and the moon represents a jealous girl.

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