Irresistible Kiss (Niall Horan Fanfiction)

Arianna runs into Niall Horan, a member of One Direction on her way to work at Starbucks. He leaves with his coffee, but also leaves his number. What will happen between Arianna and Niall? Will she call? Will they become best friends or more than friends? What does Niall think about Arianna or what does Arianna think...