我以为还有你
[wŏ yĭ wéi hái yŏu nĭ]
'Wǒ yǐwéi hái yǒu nǐ' simply means 'I thought (believed/hoped) you would still be there (for me)'. It indicates hope or past belief in ongoing support or presence that perhaps no longer exists but once was hoped for, often reflecting disappointment or loss.