至爱少年深情久伴至爱姑娘长情久待
[zhì ài shăo nián shēn qíng jiŭ bàn zhì ài gū niáng zhăng qíng jiŭ dài]
The username describes a deep love that lasts forever, where the boy remains faithfully with the girl he loves most, promising lifelong companionship and unwavering affection.