Final answer:
When Romeo and Juliet learn each other's last names, they are happy and joyful.
Step-by-step explanation:
When Romeo and Juliet learn each other's last names, they are happy and joyful. This is because they realize that they are from rival families, the Montagues and the Capulets, and their love is forbidden. However, instead of being angry or bitter, they are thrilled to have found each other and are willing to risk everything to be together.
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