She thought that everything should be over as soon as it was over, but she didn't expect that they would be entangled again. It turns out that the world is really so small. Fate has already arranged every step of your life, just waiting for you to step on it one by one. Only you naively think that if you avoid it for a while, you can avoid it for the rest of your life.
He watched her dragging her luggage and leaving without looking back. He thought this was fine, why bother. But why do I just keep thinking about it? I really forget and think about it again and again. Finally she was coming back, how could he still pretend to have forgotten her. Just struggle with it for the rest of your life.