Both of them were the first person the other met in college. To be precise, they met dozens of minutes before the official start of college.
In a strange city, two strangers met, walked together, and gradually became familiar with each other.
In the end, they fell in love, but their love was like the sand dunes that stood proudly in the Gobi. When the wind came, a little bit was blown down. When the wind came once, it was blown down a little bit more. In the end, only a slightly convex curved surface was left. That lifelong oath like flowing water, I don't know whether it evaporated or flowed into the sea.
Since you have chosen to go away, I can only wish you well, and may every corner of your world be as warm as the sun. May you be safe and prosperous.