LitCharts assigns a color and icon to each theme in The Sun is Also a Star, which you can use to track the themes throughout the work.
Immigration and the American Dream
Passion vs. Reason
Interconnectedness and Destiny
Isolation vs. Connection
Summary
Analysis
Natasha kisses Daniel to make him stop talking. She thinks that if he keeps talking, she'll love him, and she can't afford to do that. Kissing, however, is just another way of talking, so kissing him maybe wasn't the best idea. Daniel thinks that someday, he'll write an epic ode to kissing called "Ode to a Kiss."
The fact that Daniel's words are what's turning Natasha to his way of thinking suggests again that she's not actually against passion; rather, she's consciously and purposefully ignored passion to protect herself from harm.