你若如鱼我便是海
[nĭ ruò rú yú wŏ biàn shì hăi]
The phrase expresses a deep relationship between two souls, as close and indispensable to each other as fish to the sea. In Chinese literature and expressions, this metaphor conveys that the user considers himself/herself to be inseparable from another, suggesting an undying love and commitment. The user implies: If you are the fish, I would be the sea for you, where we coexist indispensably and closely just like how a fish lives in and relies on the sea.