The dog's name is Chen Xin. Yes, this is a person's name, and he is indeed a person.
As for the title of dog, it was given by many women who had interacted with him.
It's not really a love story, and it's not a pretty story.
From a boy who blushed when he saw a girl to a man who hangs around women all day long, the change is not growth, but a funny joke. The ending of the joke can only end in tragedy.