When Juliet first meets Romeo, she is immediately drawn to him, but she is also aware of the social barriers that exist between them. She knows that her parents would never approve of her marrying a Montague, and she is torn between her love for Romeo and her duty to her family.
This conflict is reflected in the way that Juliet acts around Romeo. At times, she is passionate and expressive, declaring her love for him openly. At other times, she is more reserved and cautious, aware of the potential consequences of their relationship.
For example, in the balcony scene, Juliet initially appears to be coy and playful, teasing Romeo about his love for her. However, as their conversation progresses, she becomes more passionate and open about her feelings. She tells Romeo that she loves him "more than words can say" and that she is willing to give up everything for him, even her life.
However, Juliet is also aware of the dangers that their relationship poses. She knows that her parents would never approve of her marrying Romeo, and she fears the potential for violence between the Montagues and Capulets. This fear is reflected in her more cautious and reserved behavior at times.
For example, when Romeo suggests that they get married, Juliet is hesitant. She tells him that she is "afraid," and she warns him that their relationship could have tragic consequences. She is also worried about what her parents will say if they find out about their love, and she asks Romeo to "be careful" and to "avoid" her until he hears from her again.
In conclusion, the social expectations of Juliet play a significant role in shaping how she acts around Romeo. She is torn between her love for Romeo and her duty to her family, and this conflict is reflected in her behavior. At times, she is passionate and expressive, but at other times, she is more reserved and cautious.