He thought that if they were to get married their families would stop fighting and get along.
Friar Lawrence "consents" Romeo's request to marry Juliet in hope it will end the timeless feud between the Montagues & the Capulets.
Juliet asked Friar Laurence to help her avoid marrying Paris by giving her a plan to fake her death so she could be with Romeo instead.
Romeo asks friar Laurence to marry him and Juliet in secret
Friar Lawrence wants Romeo to do different things depending on what part of the play you are talking about. When they first meet, the friar tells Romeo to go slowly in his relationship with Juliet (as if!).
He wants Friar's help to marry Juliet and himself.
The Friar cites his chief motive in agreeing to marry Romeo and Juliet as being his desire to please Romeo
It was both Romeo's and Juliet's idea to marry eachother.
The actual ceremony is not depicted, but in Act 2, Scene 6 we see Friar Laurence lead Romeo and Juliet away to be married.
Friar john and friar laurance are the witnesses and they marry they
Romeo tells his love for Juliet to Friar Laurence, who ultimately agrees to marry them in secret.
Romeo's servant Balthazar tells him the news from Verona.
Friar Laurence hesitates to marry Romeo and Juliet because just days before Romeo was infatuated with Rosaline, who did not return him her love.