毕竟深爱未曾说出口也罢相思就此长无头
[bì jìng shēn ài wèi céng shuō chū kŏu yĕ bà xiāng sī jiù cĭ zhăng wú tóu]
It expresses deep, unspoken love and longing, accepting that this kind of love remains unexpressed and might go unanswered or lead to endless longing with no end in sight.