我用尽年少时的青春来爱你以后别拿苍老的人生来忘你
[wŏ yòng jĭn nián shăo shí de qīng chūn lái ài nĭ yĭ hòu bié ná cāng lăo de rén shēng lái wàng nĭ]
'I spent my youth loving you; don't forget me in old age'. This deeply emotional phrase captures the sentiment of investing one's youthful prime into loving another and pleading not to be forgotten over time, emphasizing both commitment and fear.