借你的孤单今生恐难还
[jiè nĭ de gū dān jīn shēng kŏng nán hái]
This suggests that one may take someone else's loneliness as their own, implying deep feelings for another person. Here 'borrow' is not just about borrowing an object; rather, it indicates that these feelings cannot be returned and perhaps hint at unrequited love leading to loneliness.