The girl admitted that the boy sent her a text message.

Hello, my friend. Personally, I disagree with you. If a boy really likes a girl, he won't give up just because the girl sent a few messages and didn't reply. Some boys think it's only a matter of time. After a long time, he will get a response. I do have people around me who are persistent and later together. As for what you said about giving up if you want to save enough disappointment, boys may not think so much. If you are this girl and you want to test him, enough is enough. If you really don't feel anything and don't want to go further, it's better to talk about it, which is good for both sides.