你可能不知道其实我喜欢你
[nĭ kĕ néng bù zhī dào qí shí wŏ xĭ huān nĭ]
It means 'You might not know but I like you'. This suggests a hidden, unexpressed affection. It implies shyness, hesitancy in expressing one’s feelings towards the other person, often used by those harboring secret crushes or admiration.