So, I agree with Christina's first point, text messages are the devils work when you are trying to have a serious conversation. Messages can and moreover, probably are, misconstrued as they can be read in many different ways and unfortunately skewed by the 'reader's' mood at the time. I have fallen fowl of this a few times. I'm am definitely no expert here but just try and call him, face to face is even better.

I wish you the best of luck.