Jamie is Kim's boyfriend.
Kim and Jamie are kissing in Jamie's home but her father, Bryan Mills tracks her down by a tracking device he implanted into her iPhone, and although Jamie is polite to him, the overprotective Bryan is less than impressed and has Kim leave.
Three weeks later, the Mills family is at a diner back home on the Los Angeles coast to celebrate Kim passing her driving test. They are joined, much to Bryan's surprise, by Kim's boyfriend Jamie (Luke Grimes). Kim jokingly asks her father not to shoot him.