I don't want to remember (One Direction)

It's been two years since Carsyn Norman was tragically killed in Doncaster, England... Louis Tomlinson is the schools jock. His girlfriend is Emmie Sheeran. Emmie gets so much attention because her boyfriend is loving, caring, and sweet - at least that's what everyone thinks. Nobody knows Louis is an abusive boyfriend and has a huge secret. One day, Louis gets mad at Emmie and slams her head into the concrete floor. He thought she was dead - but that's exactly what he was planning, to kill her. Two years later, Emmie awakes from a coma. She doesn't know why we was in a coma and nobody is planning to tell her. Once Emmie starts going back to school, she comes across none other than Louis Tomlinson. He's starting to creep her out plus she's getting weird text messages from people who are stalking her? Can you guess whose stalking her?