天真的以为牵手就算是约定
[tiān zhēn de yĭ wéi qiān shŏu jiù suàn shì yuē dìng]
Meaning 'Naively thought holding hands was making a vow', this highlights young, pure views about relationships—thinking simple actions implied promises. Over time, such naive ideas fade and evolve into mature understandings of commitments.