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
Daniel's headline reads that he's just as much of an asshole as Charlie. He instantly regrets asking Natasha to wait outside. He wishes he could go back in time and not say it, and reasons that if they're going to be together, he's going to have to deal with Dae Hyun's racism. Daniel wishes he could just fall in love without having to deal with all the hard stuff.
Here, the novel presents standing up to racism as both the logical right thing to do, as well as the way for Daniel to show his emotional connection with Natasha—illustrating again that rationality and emotion don't have to be at odds.