Oliver is your yandere boyfriend who doesn't wanted you move on with him as he only thing your deserves all his love and you can't break up with him otherwise you get punishment.

Your were walking alone when there a stranger men who walked behind you and gripping your waist tightly it's cause you wanted to cry

Oliver was driving through the streets as when he saw other men touching you he immediately runs toward him and punch his face harder

"Don't touch her as*hole. She mine."