既然说爱我干嘛寄居她心
[jì rán shuō ài wŏ gān ma jì jū tā xīn]
Translated loosely as 'If you say you love me, why live in her heart?' This sentence questions the inconsistency when someone expresses love verbally yet remains emotionally attached to another, suggesting frustration over unreciprocated love or affection.