Romeo and Juliet are in love because when they first saw each other it was love at first sight. There connection was amazing and they were inseparable. Romeo was still in love with another girl but when his eyes met juliet that all changed. At that point we as the audience knew that Romeo and Juliet were in love with each other. The first reason is to why they are in love is because romeo drank the poison when he thought juliet was dead. He automatically just right into the conclusion that juliet was dead. From the book The Tragedy of Romeo and Juliet. It says “ Thy drugs are quick, thus with a kiss i will die.” Meaning that Romeo was brave enough to drink the poison because he thought juliet was dead. Now if that is not an act of love.