情深似海不为我蓝
[qíng shēn sì hăi bù wéi wŏ lán]
'Qing Shen Si Hai Bu Wei Wo Lan', loosely translating to 'The Love Is Deep As Sea But It Never Turns Blue for Me,' which expresses deep and abiding emotions towards someone, but despite their profound affection, it's not reciprocated or recognized as desired.