我有心你无情我失心你失忆
[wŏ yŏu xīn nĭ wú qíng wŏ shī xīn nĭ shī yì]
Describes a situation where one has intentions (love/care), but the other party does not reciprocate; it even results in the heartbreak of being forgotten. A poignant expression of lopsided affection and unrequited feelings.