She always liked to walk along the corner and would always step on him who was also walking around the corner.
So their conversation changed from "I'm sorry." "It's okay." To "Why is it you again?" "Why is it still you?"
The tacit understanding is that neither of them has changed this habit.
Later, they were together. He didn't allow her to go around the corner. "Why?" She was very puzzled.
He said seriously, "Don't you know it will cause a lot of trouble to others?"
She looked up and stared at him, and the next second she was hugged into his arms.
"It's enough to trouble me alone. Isn't a lifetime enough?"