Forbidden Friends

Two fourth years, one in Gryffindor and one in Slytherin became friends. They kept their friendship because they knew that if their parents knew, they would be forced apart forever. However, their parents eventually found out and forced their friendship to end forever. Still, they both met in secret and no one ever knew. Their families hate each other. Then, their families learn to like each other, even if Gryffindors and Slytherins are enemies.