没有你我能活但不会再快乐
[méi yŏu nĭ wŏ néng huó dàn bù huì zài kuài lè]
This indicates a state where 'life can go on without you, but there will no longer be joy', reflecting the impact left by a special someone who makes living meaningful, or rather joyful - in a certain period of time. The loss or departure of such a person brings up deep emotions of dependence.