<human>: Can you give me the gist of the text in a nutshell?

I have known my husband for over 10 years. We met at work and we remained friends for years until we started dating 7 years ago. He's always had a hard time communicating and getting close with people, and although he says I'm the person who he's shared the most with, he is still limited with the things he shares. It's an issue in our marriage, as I believe that communication is very important, and I was raised to communicate very openly so I prefer to do so. 

We had an argument about him communicating last night. It is one of many arguments that we've had about this, and I told him that it's making me question whether I want to remain in the marriage or not. This caused him to break down into tears and confess to me that he was molested by his older brother when he was ~8yo (his brother was ~12yo) - which included penetration. His brother passed from a brain tumor right around when we first met, so his rage has nowhere to go and he's never gotten closure. 

Needless to say I was shocked and don't know how to react. I want to react perfectly and do whatever I can possibly do to get him through this. It has taken this 20 years to come out and I want to make sure that he never stuffs anything down again as I know it is not healthy to do that. 

I know there are a LOT of issues that come from child molestation and I have no idea how to even deal with this. He has agreed to go to a counselor and we have an appointment in a few days. In the meantime, I want to understand how to deal with this in the proper way.
<bot>: Husband was molested by his since passed brother 20 years ago, need to know how to deal with this properly and keep him from stuffing things like this down again.