Belle Winn is a typical girl with a boyfriend, Evan Pace. He's been treating her poorly for the last three years. Belle is heading to Brandeis University for her first day and Evan will soon join next semester. Everything is going great until they run into Harry Styles. When they met, it was love at first site. He instantly fell for her. Unaware of it, she slowly falls for him too. Neither Harry nor Belle has ever truly loved anyone before. That is, until now. Belle soon learns that the phrase, "I love you." holds so much more than she thinks.