In Act III, scene 5, of "Romeo and Juliet," explain what Juliet is feeling when she hears the Nurse's advice on how to resolve her dilemma.
One point worth noting that demonstrates Juliet's total understanding of betrayal, is what she says to the nurse.
The nurse tells her to just go with this Paris idea (probably this advice also comes from the nurse feeling a little guilt for not reporting to the parents what Juliet has done). Juliet accepts her answer by saying:
Well, thou hast comforted me marvellous much.
Go in: and tell my lady I am gone,
Having displeased my father, to Laurence' cell,
To make confession and to be absolved.
So, she makes an excuse about what she's going to do: go to the friar (but she doesn't tell they truth about why)
Then, when the nurse is gone she says...
Ancient damnation! O most wicked fiend!
Is it more sin to wish me thus forsworn,
Or to dispraise my lord with that same tongue
Which she hath praised him with above compare
So many thousand times? Go, counsellor;
Thou and my bosom henceforth shall be twain.
I'll to the friar, to know his remedy:
If all else fail, myself have power to die.
She's swearing and calling the nurse an enemy. She is telling the nurse to essentially get out of her life. She insinuates that the friar will be able to help her out, and if not, she's suicidal.
Betrayal... anger... sucidial
In this scene, Juliet is trying to figure out what to do about the fact that her father insists she marry Paris when she is already secretly married to Romeo.
When the Nurse tells Juliet she should forget Romeo (even though the Nurse knows they're married), Juliet completely loses faith in the Nurse. As she says at the end of the scene, her heart and the Nurse will be separated forever now because of that advice.