A Marriage Law (Dramione)

Okay I get that the marriage law thing is really overdone. But I just thought it would be fun to write one. It probably won't be very good, so I'm sorry. Obviously, I don't own any of the characters, they belong to J.K. Rowling. Anyway, here's the description.

It's the year after the war, and Harry, Ron and Hermione have returned to Hogwarts to complete their final year.
Little did they know that there was a new law being announced, and it would change all of their lives...