此情应是长相守君若无心我变休
[cĭ qíng yīng shì zhăng xiāng shŏu jūn ruò wú xīn wŏ biàn xiū]
'If This Feeling Lasts for Long, If You Don't Have Heart Then I Must Stop' implies dedication to love. But the username adds the clause 'if you do not feel similarly then it stops here.' Reflecting deep affection but also conditional resignation.