I'm sorry he went through this and I'm sorry you are now going through this. I'm sure he wishes that things could go back to the way they were before he was raped! I was silent for over 30 years. That doesn't mean everything was okay, I was a total mess. That means it was bottled up and festering. Yes, he will cry, but tears are cleansing. At least he is crying instead of continueing in denial letting it rule his life. Just be there to support him emotionally.
It's easier to go down a hill than up it but the view is much better at the top.