sub17 , These types of things are likely to happen through the life of a relationship with anyone.
To me , what I read was you were sensitive to his needs even when he didn't mention it to you.. and that you pressed for more to know the truth to repair and damage you percieved is a very good sign.
No matter how strong or not a Dom or sub is.... there comes the words and sometimes actions that harm.. I am guilty too of not speaking much when something bothers me.. the more it bothers me the less likely I am to speak with the one I feel it involves until i resolve it internally.

I think you should be commended for being sensitive to his needs.