After breaking up, the boy's signature is to look down on everything, and the girl has never written a signature. Who put it down? Who is more cruel?
Judging from the boy's signature, he is pessimistic about everything, which shows that the boy is naturally the first to let go, while the girl is slow to write her signature, which shows that she is still struggling and has not yet got out of the shadow of lovelorn. It is not a question of who is cruel and heartless, but who can treat things with an open mind.