The key part in the first paragraph, "Usually". Not always, in my experience, no one really knows what they are doing. We all just try to do our best at living life.
The second part is rather insightful. If he wants to talk then he will. But Panda, you can't force him to talk. Offer, and if he says no, then it's up to you to wait for him to come around and talk, or choose to do other things.
Peace and kindness