2) "The One" by Backstreet Boys
Ironically the moment that Ron knew that Harry was the one that he would love forever was the moment that Harry stepped in front of him and took the killing curse instead. It seemed fitting that a moment that should have been celebrated in joy, they were in love and the war was over, Voldemort was dead, should end in such disaster. Ron had always had rotten luck, but it was just pure stupidity that he had neglected to check if Lucius Malfoy was actually dead. Oh why hadn't he taken the time to check the bastard's pulse? It turns out that Harry was the one after all, the one he would grieve over forever.