She struck a fatal blow to him when he was in the most pain. The feeling of turning from love to hate was so painful that it made people crazy. She wanted to run away, but she forgot that the man in front of her was no longer the original boy. It was just one time when they met by chance, but they were inseparable from then on. The difference between clouds and mud lies not in themselves, but in their locations. If they had a choice, they wouldn't make the same mistake again. If life was just like the first time they met, it's a pity that there is no if.