What is the first coincidence that occurs in romeo and Juliet act one scene two?

In Romeo and Juliet Act One Scene Two, the first coincidence that occurs is the fact that Romeo and Juliet cross paths at the Capulet ball. The two previously unknown love interests come into contact after Romeo, masked and disguised, crashes the party. This serendipitous meeting sets the stage for the unfolding love story and subsequent tragic events.