时光匆匆你未离余生漫漫我陪你
[shí guāng cōng cōng nĭ wèi lí yú shēng màn màn wŏ péi nĭ]
A longer phrase conveying urgency yet commitment. ‘Time flies swiftly but you haven't left; my future stretches endlessly while I’ll accompany you.’ Reflects long-term support in a relationship.