Derek left because Kaylie was being a ho… she col7;n̵udt decide who she wanted to be with. I’m PRETTY sure you’d do the same thing if the guy you liked did that. Derek probably would’ve started crying if he had to continue FEELING what Kaylie felt for Lucas. I mean, the chick couldn’t decide who she wanted to be with. Why should she care if Derek left??? UNLESS she’s attracted to him!!! Honestly, I’m gonna stop reading these books if Kaylie doesn’t decide in the 5th book. She BETTER be with Derek!!!!