Changing his mind?[Teen wolf/The originals]
After the Mikaelson's mother died in Mystic Falls Kol made a run for it in an attempt to leave his siblings.
He lays low in Beacon hills where he finds out about most of the supernaturals that live there. He 'reluctantly' enrolls in the school and gets close to Stiles Stilinski, the human that's best friends with the Alpha. He subconsciously gets TOO close to him, starting to feel more than he should for a human.
He falls for him and wants him so he stays as close as he can without being found out as the Original that most of the Werewolves are watching out for.
(Also, think of Kol from 3x19 of VD. That hairstyle and looks, etc)
Disclaimer: I do not own The Vampire diaries, some of the dialogue used, or anything else you may recognize.