She has only had him in her heart since she was a child, and it has not changed for so many years. What about him?? He was engaged, and she made the dress for him with her own hands. She sincerely blessed them. Didn't he know that her heart was broken? He was heartbroken. For him to say "I want to see you", she gave up everything and flew across the world to come to him.
It turned out that he had still regarded her as his little sister all these years and never noticed her changes. It wasn't until she was about to marry someone else that he finally discovered that her original position in his heart could no longer be replaced by anyone...