Friar Laurence agrees to marry Romeo and Juilet because he hopes it will end the feud between the Capulet and Montague family. I think that he's not thinking it through because I feel like if Romeo and Juilet get married it may lead to more fighting rather than less. The grudge between them may be more dangerous if Romeo and Juilet are to get married so I think that Friar is wrong.
For this alliance may so happily prove / To turn your households' rancor to pure love," Friar Lawrence says when Romeo asks him to marry Juliet. He thinks the love between Romeo and Juliet will end the feud between their families.
