Ah, Juliet, if the measure of thy joy be heaped like mine... (II.VI.24)
Romeo, Juliet, and Friar LawrenceFriar Lawrence's Cell
But my true love is grown to such excess I cannot sum up sum of half my wealth (II.VI.33)
Romeo and Juliet are meeting to get married in secret by Friar Lawrence
Come, come with me, and we sill make short work for, by your leaves, you shall not stay alone Till Holy Church incorporate two in one (II.VI.35)
Sometimes lying and deceiving is easier than telling the truth. This scene strengthens that idea because it portrays Romeo and Juliet getting married in secret, all the while being super happy about it.
Juliet's dialogue here also supports the idea that sometimes it is easier to lie than tell the truth. Based on the dialogue, we can tell that Juliet thinks her life is being bettered now that she can marry Romeo because she loves him so much.
Through Romeo and Juliet, we can see that a lot of the time, deception is for the benefit of the one who is lying.