Y/n and Ron broke up in their 6th year. Now that it was their final year. Y/n had another boyfriend, but he wasn't the Best.... She and Ron made a promise a long time ago, if any of the two were in danger, they would whisle. Today, when they went back to Hogwarts. They had to be in the same train cabin. Untill, Y/n's boyfriend, Sam, barged in angrily.