Why does Juliet reject romeos offer to swear the truth of his love by the moon?

Answer 1

What she says is that he shouldn't swear by the moon because the moon changes (waxes and wanes over a month) and she does not want Romeo's love to be that inconstant.

What she really means is that Romeo should not swear at all. Part of the game of love, the flirting game of the time, the game which Romeo was playing with Rosaline, was that the male should profess his love, as Ophelia says in Hamlet "with almost all the holy vows of heaven." Her cynical father says, "Ay, springes to catch woodcocks". The lover makes these vows but they cannot be trusted; they are pure hooey, designed to trap the female and induce her to let down her equally put-on aloofness.

Juliet knows this. "Yet if thou swear'st, thou may'st prove false; at lover's perjuries, they say Jove laughs." Her position is awkward. She has been caught unawares with her emotions in full view. She cannot now put on the pretence of aloofness which is the female part of the game. She is not playing a game now, and she wants Romeo to cut the BS and talk to her in the same way.

At some point all lovers must stand before each other naked, with no clothes to hide who they are physically. They must also be emotionally naked. Juliet has reached that stage, and she is asking Romeo, if he loves her, to take off his emotional clothing, such as swearing by the moon, and appear before her as he is.

Answer 2

Shes worry that perhaps romeo will prove inconstant or false or will think Juliet too easily won. Romeo begins to swear to her but she stops him, concerned that everything is happening too quickly

Answer 3

Juliet doesn't want Romeo to swear by the moon because the moon changes shape and if Romeo swears by the moon his love will change shape

Answer 4

she fears he is being disrespectful to the moon