Girls complain that boys are slow to reply to messages. Will they care about boys' performance?

That doesn't necessarily mean you care.

Girls complain that boys are slow to reply to messages. In fact, it can be seen that this girl is expecting him to send a message to herself. It's really painful to wait for news from someone. If you put yourself in the other's shoes, the boy and the girl will feel the same way when they reply. Doesn't mean this girl is interested in her or anything. More because each of us has this feeling. If you don't believe me, you can try waiting for someone to send a message and never reply to your feelings.