Half a heart (A Niall Horan fanfiction)

Erina McCarthy is a 20 year old girl from Mullingar, Ireland. Her neighbor, Niall Horan, has been her best friend for as long as she can remember. After Niall moved to England, to focus on his career, they don't see each other very often anymore. Erina misses Niall, Niall misses Erina. They just feel half a heart without each other.