Nathan Sykes Fanfiction (NEEDS A TITLE)

Gracie-Mae Parker is Tom's younger cousin, in fact she's just a couple months younger than his band mate Nathan.
Gracie and Tom have always been close and she has lived with him since the band started, he always kept her out of the lime light though, for her safety.
Gracie and Nathan started dating towards the end of the 'Word Of Mouth' tour. Nobody else knew except the two of them and it was all going well, until Gracie discovers something that forces her to leave in order to save Nathan's career and allow him to keep living his dream with out being burdened with her worries. He's going to be dad.

How will Nathan react when he discovers the truth, months down the line? And how will things pan out for the pair as time passes? Who will interfere and what challenges will they face?