On the other hand, Juliet is the daughter of Lord and Lady Capulet. She is a beautiful and lovely maiden who starts off as a dutiful and dependent woman, who seemingly lost all of her freewill having agreed to her mother's wishes at the start of the play. Hence, given the intensity of her love towards Romeo, Juliet transformed into becoming an independent person capable of doing anything just for the sake of her feelings.
Analyzing the characters in a much bigger perspective, Romeo is a perfect paradigm of unpredictability. Romeo's personality is very complex but at times his actions and decisions are predictable - a representation perhaps of the peculiarity of men.
At the start of the play, Romeo isn't immediately in love with Juliet. He's into someone else named Rosaline, but the latter was not interested in Romeo. Rosaline made a vow not to marry, leaving the lad in sorrow. This part of the play clearly shows that Romeo does not just kiss by the book but he loves by the book as well - and by the book means any book from textbooks to pocketbooks.
Now comes Juliet, who was supposed to marry Paris. However, in a rare night when the stars aligned for our two star-crossed lovers, Juliet met Romeo and in an instant, the purest form of love was in fruition.
Juliet is quite an enigma. She personifies the typical woman who can be as nice or fierce depending on what's on the line. In the end of the story, both protagonists take their lives due to their undying love for each other. However, the scene of Juliet's death shows greater courage as she stabbed herself directly in the heart - a scene that I think makes her love for Romeo sacrificial to a far greater extent.