Because they literally fall in love at first sight. Romeo sees Juliet at the Capulet's part and goes "hey, shes pretty" and charms her and they end up kissing, getting married and dying in 3 days. If you notice, all they ever talk about is eachother's physical characteristics and how eachothers eyes are like stars.
Romeo and then Juliet...
Romeo and Juliet first met in a feast at Capulet's house.
Romeo and Juliet first meet at the Capulet's party
romeo
romeo
romeo
Romeo is the first of the two to speak.
Romeo dies first.
Romeo is the first of the two to speak in Rome and Julietby William Shakespeare. Romeo's first line is, "Is the day so young?"
Romeo.
yes
at first she doesn't, but he tells her he is there eventually