What kind of psychology is it that boys don't reply to girls' text messages?

First of all, there may be many people who don't reply to text messages, and maybe he didn't see them. Don't add imagination to one thing. Actually, it's not as complicated as you think, and texting is useless. You should tell him directly what you really think and let him give you a definite answer. Just send a text message. He doesn't know what you mean. It's very tangled. He doesn't hate you!