A boy didn't reply to a girl's text message until a day later. Does it mean that he is not interested in that girl?

See what the short messages sent by girls are, such as confessions. If the boy doesn't want to go further, he may hesitate. If it's not, it's an ordinary text message, so the boy won't reply every other day or for a long time. No matter how busy he is, he will always check his mobile phone at dinner time. I will find time to reply at least three meals at the latest, which shows that he is a little disgusted with this girl (it is not excluded that he left his mobile phone at home, but the probability is very small).