属于我的你也被她占据了
[shŭ yú wŏ de nĭ yĕ bèi tā zhàn jù le]
'The you who belongs to me has also been taken by her.' This phrase suggests that there's someone (often a partner) who used to be reserved for oneself but is now shared with another person. The user likely feels sad and disappointed because they may think they have lost something important.