若你是唯一我便不离不弃
[ruò nĭ shì wéi yī wŏ biàn bù lí bù qì]
If You Are The Only One, Then I'll Never Leave illustrates undying commitment or devotion. This shows an exclusive, unconditional relationship: if you're truly the only one for me, I will stay by your side without wavering under any circumstances.