你说要陪我长大废话不然我陪谁
[nĭ shuō yào péi wŏ zhăng dà fèi huà bù rán wŏ péi shéi]
This username conveys a sense of longing and expectation in a relationship, implying that the person expects the other party to stay by their side as they grow older. It's often used playfully or sarcastically between close friends or lovers.