What do you mean when you send a text message to a girl and don't reply?

Obviously, he is avoiding your feelings. Since you said you talked to him about other topics, he always replied to you, proving that he was still willing to contact you. In other words, he still has a crush. Maybe you haven't known each other long. At present, he can't fully trust you to give her happiness, so you should give him more care and care at this time to dispel his inner concerns. Remember not to rush in, lest it be reversed. After all, it's a girl. Be more patient. After he trusts you, confession will be easy to succeed.

I hope my suggestion can make your love road smoother and more refueling!