Run away with me

Leo and Zane were best friends, but when they lost their parents they had to go to their abusive relatives places. So Zane found Leo and they ran away together. In this story they take a journey to running away together, forever. But then they fall in love. They become a "thing" and live wherever they want. But then the tables turn. A virus comes out and kills half of the world. But then something terrible happens...