I went for a certain storyline, I hope you guys can see it too.

Bobby neglects Jisoo during their relationship so Jisoo leaves him. Only after he lost he, he realizes he should've appreciated her more while he still had her.
Jennie caught Hanbin flirting with a girl/cheating on her. Hanbin only realizes his mistake after Jisoo and his best friend point it out but by then it's too late.

Please consider this pure fiction. I made this for my own and your entertainment, so enjoy :)