枉我一片痴情却不得你真心
[wăng wŏ yī piàn chī qíng què bù dé nĭ zhēn xīn]
Meaning 'Alas, my deep affection is not returned genuinely.' It laments the lack of reciprocity in a romantic endeavor, illustrating unreciprocated feelings or a mismatch in the depth of emotion experienced between people involved in a connection.