懵懂少年不知她心无知少女不明他情
[mĕng dŏng shăo nián bù zhī tā xīn wú zhī shăo nǚ bù míng tā qíng]
Translated as 'The naive boy does not understand her heart, the inexperienced girl misunderstands his love.' This captures the bittersweet sentiment of youthful romance and misunderstanding between two teenagers, both unaware of each other’s feelings.