They were childhood sweethearts who were supposed to be a couple. She met him in junior high school. She fell in love with him in high school. She broke up with him after high school. When she met him as an adult, she was like a stranger. Just say "How are you?" Only after missing it can you learn to cherish it. Same for anyone. Just wish "May the sun shine everywhere you go, and may the warmth of your dreams be far away." That's all.