Pushed To and Past The Brink (Gratsu)

When Gray cheats on Natsu. Natsu leaves it alone, when he brings her to their house and addresses Natsu as a roomate, he is at the line, when he proposes to her in front of him. He has been pushed past the brink, and snaps.
Natsu leaves to start a new life, to leave her, to leave Gray. When Gray finds he's missing that morning he leaves it be. When he gets divorce paper he realizes he wantef Natsu back. What happens?

Eventual Gratsu

Dont own fairy tail just plot