[Emotional Story] Love, so leave (repost)

An Dong has been my deskmate since junior high school. He loves to play and make trouble, but his grades are very good. During the high school entrance examination, An Dong's score greatly exceeded that of the technical secondary school he applied for, but he was eventually rejected because he had congenital heart disease. But in our eyes, he rides a bicycle, swims, loves to sing and laugh, and is healthier than a "healthy person".
When An Dong and I were in the same class again in high school, we were so happy that we moved in together on our own initiative and became roommates again. I usually don't talk much, but when I'm with An Dong, I talk endlessly, laughing and making trouble. He often invites a few of our friends to go for a walk along the Mijiang River. We walk on the warm, white river beach and watch the reeds dance gently in the wind, singing softly against the clear water and mountains, and the Andong Club sings a few songs with great excitement.
At that time, I was a little girl who loved to dream. In my heart, An Dong had become the Prince Charming in my imagination at some point. He is handsome, lively, and smart, especially his sunny smile that often makes my heart move. Sometimes he will occasionally show a hint of melancholy that is not easily noticed by others. When he looks at me like this, I actually feel a sad and heartbreaking feeling. Of course this is the deepest and deepest secret in my heart.
One day when I was a sophomore in high school, I accidentally flipped through An Dong's notebook, and the last page actually said: "I love her, so I left her." When I heard this, I wondered which girl An Dong was attracted to? I pretended to be curious and lively and shouted to him: "Quickly recruit me, who is it!" Unexpectedly, An Dong lowered his face and said irritably: "Why are you rummaging through my things! A lyric I copied has none of your business!" The classmates all looked at us in surprise. It was the first time that I was so ignored by An Dong. I was annoyed and angry and ignored him. When I arrived at school early the next morning, I found that An Dong had changed seats with someone else on his own initiative. The girl's reserve and self-esteem made me pretend to be indifferent to his actions, and we quickly got into a heated relationship with my new deskmate. In fact, I felt very sad. I sometimes wonder, does that sentence apply to me? But he soon scolded himself for being sentimental. We also gradually drifted apart.
Not long after, An Dong, who had always had excellent grades, suddenly announced that he had dropped out of school. He said, "I have wanted to make money for a long time. Making money is a responsibility, do you understand? I want to take over my brother's small department store. From now on, if you are in need of money for college, just come to me!" After An Dong ran the small department store, he really made a lot of money. He invested in decorating his home, especially his parents' room, to be luxurious. He was called a promising filial son by many people in our county.
Later, when I was admitted to college, I occasionally thought of my former dream of Prince Charming and felt very ridiculous. An Dong would call me occasionally. I was glad that I never mentioned that I had a crush on him, otherwise it would be too embarrassing!
One rainy day in my third year of college, An Dong's sister actually appeared in front of me, looking very haggard. She told me: "You know, my brother has a congenital heart disease, and the cure rate is only two out of a thousand. The doctor once said that it would be difficult for him to live beyond the age of twenty. My brother knew this when he was thirteen or fourteen years old, but he has always been strong and has always been the most qualified good son and brother. He once told me that he liked a good girl at the same table very much. Of course, this cannot tell her that she is such a fragile girl." I looked at her in great surprise. But she began to cry: "My brother passed away two months ago. He once kept a diary with your name written on the title page. My brother endured too much pain alone. I hope that when he is in another world, his heart can let his good friends know and understand a little bit, so I want to give this diary to you." I took the diary and turned it over subconsciously. Suddenly I saw my name in big letters, followed by the sentence: "I love her, so leave her."