Sam, since you know this person well is there any communication between you?

I would just stay supportive and try to reach out but watch out if you get your hand nipped!

You say he is kinda hostile. That does not sound good.

Maybe if he starts to open up you could very carefully just listen and try to hear with an open heart. This is a tough situation.

But in the end you are not responsible for him. There are other people on PC that might benefit from your experience and sensitivity. Consider that as a possible outlet for compassion.