I have been on a lot of first dates lately.
When you are on a date, you reveal certain things about yourself. Certain things that could be construed as embarrassing or weak. But the fact is that anything you tell a person about yourself is not truly revealed. For someone to reveal something about you, it must be without your consent or initiation. An example: When I was in university in Lyon, the sinks in the bathroom each had a yellow ball on the wall next to them. When, two months into the semester, I asked my friend what they were, she looked at me for a moment then told me they were soap. It was immediately obvious that I had never washed my hands after using the toilet.
That was something I revealed without wanting or meaning to.
That is something I would never tell someone on a date.