The gray-eyed morn smiles on the frowning night,Check’ring the eastern clouds with streaks of light,And fleckled darkness like a drunkard reels (2.3.1-3).
Holy Saint Francis, what a change is here! Is Rosaline, that thou didst love so dear, So soon forsaken? Young men’s love then lies Not truly in their hearts, but in their eyes(2.3.69-72).
My heart’s dear love is set. On the fair daughter of rich Capulet. As mine on hers, so hers is set on mine. I’ll tell thee as we pass, but this I pray, That thou consent to marry us today(2.3.60-65).
O, she knew wellThy love did read by rote, that could not spell. But come, young waverer, come, go with me. In one respect I’ll thy assistant be, For this alliance may so happy prove, To turn your households’ rancor to pure love(2.3.94-99).
I pray thee, chide me not. Her I love now Doth grace for grace and love for love allow. The other did not so(2.3.91-93).
For this part of the scene, Friar Lawrence is announcing the setting. There isn't an argument here, but there is a description of the area around him.
In this scene Romeo announces to Friar Lawrence that he loves Juliet and that he wants to marry her after spending just one night with her. Friar Lawrence is confused and mad, because he had spent so much time talking to Romeo about his love with Rosaline, but now he was obsessed with another girl.
Towards the end of scene 3, Romeo asks Friar Lawrence one last time to wed him and Juliet. Friar Lawrence thinking that this could possibly bring peace to the two battling families finally agrees.