Which them is depicted througb Juliet's monologue?

Read this excerpt from act II, scene II, of Romeo and Juliet:

JULIET: Thou know'st the mask of night is on my face,
Else would a maiden blush bepaint my cheek
For that which thou hast heard me speak to-night
Fain would I dwell on form, fain, fain deny
What I have spoke: but farewell compliment!
Dost thou love me? I know thou wilt say 'Ay,'
And I will take thy word: yet if thou swear'st,
Thou mayst prove false; at lovers' perjuries
Then say, Jove laughs. O gentle Romeo,
If thou dost love, pronounce it faithfully:
Or if thou think'st I am too quickly won,
I'll frown and be perverse an say thee nay,
So thou wilt woo; but else, not for the world.
In truth, fair Montague, I am too fond,
And therefore thou mayst think my 'havior light:
But trust me, gentleman, I'll prove more true
Than those that have more cunning to be strange.
I should have been more strange, I must confess,
But that thou overheard'st, ere I was ware,
My true love's passion: therefore pardon me,
And not impute this yielding to light love,
Which the dark night hath so discovered.

Which theme is depicted through Juliet’s monologue?