Zhou Zhu never thought that he would meet Liu Zixin again. From the moment she left, he thought they had no relationship anymore.
Zhou Zhu never thought that he would give up Cheng Cheng because of Liu Zixin, even though he knew that he didn't love her that much.
It should be all in time, right?
At least try.
Maybe this makes you happy, but it also hurts other people.
You see, love is inherently selfish.
Would she want to do it all over again on a rainy Monday?