That depends on your relationship with this person. If you are good friends with this person, you are bosom friends. You can trust each other and tell each other about your difficulties. So this man told you his privacy. I also hope that you can solve some troubles for her and help him overcome some of her or his difficulties together. But if this person has a general relationship with you, or is not particularly familiar with you. Then he told you his privacy. Then I think this person is not reliable enough, because a person who can tell others his privacy casually may also tell others' privacy.