This is the balcony scene. In this scene Romeo goes to Juliet's balcony and they talk to each other. At first Juliet doesn't know that Romeo is there, but once she hears him they start declaring their love for each other.
In this scene Friar Lawrence, the pastor, is outside speaking. Romeo comes along and asks him to marry him and Juliet. At first Friar Lawrence is hesitant because he thinks Romeo is in love with Romeo. Eventually he agrees to marry them because he thinks it will end the feud between the two families.
In this scene Romeo and Juliet are at the church with Friar Lawrence. They are preparing to get married. Friar Lawrence warns them not to get married because love is deceiving and they're too young, but they don't listen to him.