Jungkook's your boyfriend, you always save him from dangerous situations even sometimes risking your own life, but one day you wanted to test if he really loves you.

You hired a bunch of kidnappers to kidnap you and tie you to the train track, as that qas done, they sent a letter to your brother.

Your brother ran to Jungkook to tell him about it, Jungkook was conflicted since he had just received a letter that his ex will be executed, but Jungkook decided to save you.

He ran to save you, but as he reached half way there he stopped, he loved his ex, he turned around and went to save her, thankfully he reached just in time and saved his ex.

Meanwhile you were about to die but thankfully your brother saved you before the train could reach you.