"Why did you leave without saying goodbye?"
"We can't go back..."
Nothing can go back...
From the moment her boy chooses another person, there is no going back...
But he is not a fool. He hates her leaving and being cruel, but he loves her even more.
But she... Knows that it's not that she doesn't love her anymore, she just doesn't deserve to be loved anymore.
Leaving is the best ending
Intention: Love must be pursued bravely and break through the shackles of family