Final answer:
Juliet's love for Romeo in Shakespeare's 'Romeo and Juliet' is clearly shown through her expressions of adoration and despair, particularly in her exclamations about her love originating from her familial enemy and her impatience with the Nurse for news of Romeo.
Step-by-step explanation:
We know Juliet is in love with Romeo in Shakespeare's Romeo and Juliet through her reactions and words upon discovering Romeo's presence. After the famous balcony scene where they exchange vows of love, Juliet is distraught upon learning that Romeo is a Montague. Despite the feud between their families, her feelings remain unchanged. A key line that shows her love is when she says, "My only love sprung from my only hate!" (Act 1, Scene 5).
Juliet's conversation with the Nurse also gives insight into her love for Romeo. She eagerly awaits the Nurse to bring her news of Romeo and expresses her love and impatience in lines such as, "Oh, she is lame! Love's heralds should be thoughts, Which ten times faster glide than the sun's beams." (Act 2, Scene 5). Juliet's language throughout the play vividly portrays her profound love and commitment to Romeo.