"Love Is Hard to Pillow".
According to QQ Music query, "I knew love would hurt like this" are the lyrics in the song "Love is Hard Pillow", sung by singer Xu Huiping. The song was released on 2002-10-09 and was written by : Li Ziheng, composer: Li Ziheng.
Part of the lyrics: If I had known that love would hurt people like this and that love would be so hard to hold on to, why would I take it too seriously in the first place. I have long understood that dreams cannot last forever, and it is better to look back than to miss each other. Why complain about the separation now?