你是我心底最深处的秘密
[nĭ shì wŏ xīn dĭ zuì shēn chŭ de mì mì]
In a romantic context, this name says that the addressed person is the owner's deepest and innermost 'secret.' It could mean the special feeling hidden at the very depths of the person’s heart—a metaphor often used when wanting to express very private or very precious emotions for someone.