扳指一算少年你没我不能活
[bān zhĭ yī suàn shăo nián nĭ méi wŏ bù néng huó]
Here, '扳指一算' means making predictions on fingers like fortune-telling; the rest of it says if the young person doesn't have me they can’t live, expressing a deep sense of indispensability and self-centered importance in the relationship.