Is he a pive-agressive man? how did you get the courage to walk away?

I have read about pive-agressive behaviour recently and it confirms why I feel so confused and guilty around my husband. Just one thing though - he does keep most of his promises, he is reliable and has a good job. It's the way he talks to me, the fact that it takes an enormous work on my side to get him answer my questions. he finally admitted (5 years later) that the reason I am childless now is because he was scared to grow up plus he was not sure about our relationship. He still refuses and tries to make me feel guilty when I want to discuss our issues of trust. Then he would make nasty comments: "you are just trying to make an argument again. It must run in your family", etc. I am totally dependent on him now as I have no job at the moment. I am petrified to loose our house, but I can't go on like this with no future. He does not think that pive-agressive refers to him. In fact, he usually has a problem admitting his mistakes. He sneers a lot and hates to hear "no".