痴心不改定将情葬死海
[chī xīn bù găi dìng jiāng qíng zàng sĭ hăi]
'Unswerving Heart Will Bury Love In The Dead Sea' conveys an undying devotion despite knowing that their love is ultimately unreciprocated or will come to no good end, like burying something precious in the desolate Dead Sea.