Prove It (A Niall Horan Fanfic)

This is my first little story thing. You can call it a one-shot or whatever I really don't care.

This story is for my best friend and I love her lots!

I might right more stories so please vote/fave and share with people if you want :)

By the way the rating on this is lame, its like boarder line PG-13 and R so I just did R.
*Sexual Content*