The number 3 stands for breaking up, which means breaking up. The two parted ways and went their separate ways.
4 stands for death, that is, this relationship has no _ for him, there is no future and no fixed term? Bye-bye and goodbye mean that he wants to give up this relationship again, end this relationship and walk out of here. This is a thing of the past. 0 is gone, I have no feelings, and I don't want to have anything to do with it.
Breaking up means that you let go of my hand and I let go of yours. Initially, there were intersecting tracks. Now everything goes its own way, maybe it's a parallel way, maybe it's a distant way. In short, there will definitely be no intertwined roads.
In other words, we no longer care about each other, gradually forget, disappear into our own world, and become strangers who will never meet. Never meet each other, each is happy.