Romeo ends up being persuaded by his friends to sneak into the Capulets party . It's a masquerade so luckily they can wear masks to be unrecognized.
(Act 1 Scene 4&5) Romeo and Juliet meet for the first time
Romeo believes that fate may have something unpleasant waiting for him. However, once the dancing begins the moment we all have been waiting for arrives.
Romeo sees Juliet and immediately falls in love. However, her cousin sees Romeo, and wants to beat him senseless for crashing the party. Lord Capulet calms him down so the party doesn't get ruined.
Romeo goes to Juliet, and gives her probably the best pickup line ever used. She was intrigued by him, and let him continue on.
"If I profane with my unworthiest hand this holy shrine, the gentle sin is this: my lips, two blushing pilgrims, ready to stand to smooth that rough touch with a tender kiss."
67 words later, he finally kisses her. Twice. They both ended up falling for each other completely right here.
I chose these two scenes to show my understanding. I did because of how important they are, they're the true beginning of this story. If you don't have this part, then Romeo and Juliet would probably be nothing. It's the first big point in the plot and I think it's super important to see how it all went down here. How easily Romeo fell in love, got himself into trouble, and how quickly Juliet was to go along with it. The littlest choices like these make the biggest impact on the future for these two.