I agree with scotzoidman....men have been taught to not show their emotions nor should they open up and share. Even in today's enlightened times, men are more likely to keep things to themselves for fear of showing any sign of weakness.

I went through the stage you described myself and even though I've realized I need to change, old habits are hard to break.

If he says it isn't your fault, believe him. You should keep trying to talk about it, but don't get discouraged if he doesn't want to talk right away. I learned a long time ago that things eventually work out and when they do, you'll be the stronger for it.