In Act 2, what are Romeo and Juliet’s character traits ?

Based upon the second act, we can say that Romeo is quick to fall in love. He is romantic, determined, loyal, and genuine.

Juliet would also be characterized as a romantic.... yet she is a bit more careful. Juliet returns Romeo's love without thought, but she also takes care to protect herself and her good name by demanding marriage. Juliet is also more cautious.... Romeo's presence excites her, but it also makes her nervous.

Both characters would be said to be impetuous.