Combine the lyrics of "I loved the person I shouldn't have loved, and I didn't love the person I should have loved, but we met so rarely that we really couldn't bear to part" and "As long as you will remember that I loved this moment because of this".
It can be seen that this is a dialogue between a couple who love each other, break up and meet again, but have to face the breakup. After many stories, they found that only the other person is their true love.
So, don't tell us that when we meet and fall in love, we should cherish each other and don't let today's things just miss the future.