I'd go with paranoid thinking I think most T's are straightforward enough that if they want to "teach you a lesson" they will actually say it instead of hinting and hoping you'll get the message. Teaching you a lesson by ignoring you comes more from unhealthy people. After all, aren't they trying to get you to be assertive and direct about what you need and feel? If there was a problem with you texting, T would actually tell you. I vote for he is busy and will respond when he can. I know it's hard to wait though. I sit and come up with reasons why my T didn't respond quickly too. I'm always wrong lol...every time