It took Lin Yu five years to become an indispensable presence around Xu Chen. From humiliation at the beginning, to numbness later, and finally he was able to perform love to the fullest.
What could be more painful than killing the person you love most with your own hands? Lin Yu couldn't kill Xu Chen, only his own life could still be controlled by himself.
Xu Chen will never know Lin Yu's purpose of approaching him, and he will always feel guilty and painful about it.
Intention: If we met earlier, would everything be the same?