Different people manage pain in various different ways, some people like to be more open about their lives and what's going on, some people like to keep it to themselves and try avoid worrying others with so said problems.
No matter what their decision is, no matter if they want to share it or not, no matter if they tell you anything or not, you have to respect their privacy and give them as much as you can, if they ask you to do something, do it, if they don't, then don't do anything.
It seems like an obvious answer, something that everyone knows, but how many times have we decided to talk and make it better? or even worse, how many times have we decided that the way we handled the problem is the way they should manage their problem?
Sometimes you just have to stay there, silent and listen to whatever they might have to say, because the biggest support we can give is being there for anything they may need.
The biggest support you can give to someone is your company and your silence, even when you have gone through something similar it doesn't mean that you fully understand what they are going through, pain is something really personal that you cannot feel for other person, you just have an idea of what they might be feeling.
This is a reminder for everybody out there and myself, don't give your opinion on a subject you don't know anything about, and don't give advice if you are not asked to, sometimes we only see a bit of the surface, when there's a lot more going on under that.