Things that matter are not easy. Feelings of happiness are easy. Happiness is not. Flirting is easy. Love is not. Saying you’re friends is easy. Being friends is not.

Levithan contrasts the ease of adopting labels or momentary sensations with the sustained work required to make them real. “Feelings of happiness” and “flirting” are presented as accessible, even effortless experiences, while “happiness” and “love” are framed as enduring states that demand commitment, vulnerability, and follow-through. The final pairing—calling someone a friend versus actually being one—extends the idea into ethics: relationships are proven through consistent actions over time, not declarations. The quote’s rhythm of repeated oppositions underscores a central theme in much contemporary YA realism: authenticity is difficult, and what matters most is often what requires patience, responsibility, and care.