Before we were dating, back when we were just friends, my ex once told me that I had "perfect skin". I don't remember how it came up as we were driving in my car, or what we could have been talking about that led to that lovely, albeit somewhat unbelievable, compliment. But it stays with me. At the time it was just one of those nice things that someone says that you don't particularly agree with, but are happy to hear anyway.