I read a post here about male vulnerability. The op was saying it's never good to show vulnerability to women you're dating or in a relationship with. This was interesting to me because there were many occasions when I have regretted showing vulnerability. But that's just part of the definition. If you open up to someone, you might get hurt. You might regret it. Pondering this man's ideas a few days after I read them, I decided he is insane. I cannot imagine a relationship where one party never shows vulnerability, other than as something nightmarish and toxic, or at best extremely shallow. I could see it working in a sugar daddy/sugar baby type relationship.