Most Helpful Guy
Much like men can use physical power for constructive or destructive purposes, women can use emotional power for constructive or destructive purposes. Men have feelings they want to keep them unhurt. Even if you have no desire to hurt them, experience with (or impressions about) women will lead some men to be wary.
The best thing to do is be open also, and be sincere about what you say. A man is much more likely to open up in a situation where he feels he is unlikely to be hurt. "You don't have to open up to me if you don't want to, but if you ever feel like talking about your past, I won't judge." Saying something like that is more likely to make him feel comfortable than "Why don't you talk about yourself?"0