She first met him when she was sixteen.
She met him again when she was nineteen.
Three years passed by, and she was no longer the shy little girl who followed him and called her brother. She began to learn to be an outstanding adult, but he began to be reluctant to her.
He said, since you have liked me since you were fifteen, you naturally have to live with me for the rest of your life.
She didn't understand the causal connection between the two things - maybe this was the so-called genius' logic.
Bts everyone: What genius logic, this is real power, real power, understand the power of real power~