O, she doth teach the torches to burn bright!It seems she hangs upon the cheek of nightLike a rich jewel in an Ethiop's ear— Beauty too rich for use, for earth too dear.So shows a snowy dove trooping with crowsAs yonder lady o'er her fellows shows.The measure done, I'll watch her place of standAnd, touching hers, make blessèd my rude hand.Did my heart love till now? Forswear it, sight,For I ne'er saw true beauty till this night.
Friar Lawrence is marrying Romeo and Juliet secretly because they are not allowed to be together. The reason for this is because Juliet is supposed to be marrying Paris.
Juliet in the scene has killed herself because she is not allowed to be with Romeo but it is all part of the seceret plan to fake her death so she and Romeo can run away together.
Romeo is at Juliet's "grave" thinking that she is dead and he is about to kill himself as well. the plan was for Juliet to fake her death and then be reborn and then run away together.
the plan failed to work so Romeo killed himself and then when Juliet awoke found him dead and then Juliet killed herself
this scene represents peace among the kingdom. Romeo and Juliet represented that anyone can be together.