People cannot live happily just by making decisions.
Yang Jingwei felt resentful about Tan Yu's leaving without saying goodbye. He thought he would never forgive her again.
Tan Yu: He said that the pain of hating me for a lifetime was greater than the cost of forgiving me, so he chose to forgive me.
Yang Jingwei: The most important thing when loving someone is to be honest. I follow my inner decision.
Probably a story about a jilted arrogant man and his ex-girlfriend.
Purpose: live a good life