I think the problem might be in the texting medium. You can't get any non-verbal cues (body language, tone of voice, etc.) from text, so it is easy to misunderstand each other. I don't like that medium myself and refused to do it for quite a while before I finally gave in. It seems like no one will call me anymore. They only text.

It might help for you to talk about this with him face to face. Say that you don't think communicating via text is working that well. Maybe you can also agree to limit the amount of texting you do and try to talk on the phone now and then instead. Just a thought.