Answer:
Before Romeo meets Juliet he is lovesick and melancholic. This change shows that Romeo is more open to love and willing to take risks for it. After Romeo meets Juliet he is passionate, devoted, and hopeful about their relationship despite the obstacles they face.
Romeo can be described as romantic because of his willingness to risk everything for true love with Juliet; while she can be seen as brave due her determination in pursuing a forbidden romance against all odds.