No doubt self-disclosure can lead to greater intimacy. On the other hand, I'm sure there are many people who regret having disclosed too much about themselves to the wrong person. Your best friend can become your enemy. Your spouse may become your ex-spouse and may have a lot of sensitive information to use against you in the divorce court. Sharing secrets is always dangerous. You have a chance of about one in a hundred that your secret will be kept. You have no real way of knowing that you are receiving intimacy for intimacy, quid pro quo. I am speaking from experience.