Friendship, something trustworthy, can also be betrayed at any time.
He will always remember that knife blow at that time. Maybe the person involved feels that he can let it go, but he will never let him get hurt again.
"I will be with you, no matter what your status."
...
He feels like he has everything under control, but everything is beyond his control.
Just like life and death, he cannot control it.
Purpose: Pursuit of romance and freedom