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 tha...