情深似海诋毁不过时光蹉跎百里情深不及他人笑颜诋毁
[qíng shēn sì hăi dĭ huĭ bù guò shí guāng cuō tuó băi lĭ qíng shēn bù jí tā rén xiào yán dĭ huĭ]
A complex expression implying deep, sea-like affection; however, time passes, distances increase, making this profound emotion fall short compared to someone else's happiness. It expresses feelings of love not reciprocated or fading.