Well, there's a whole niche culture (PUA) built around this, and there are so many contradictory observations and prescriptions that I don't know that I even ha

Well, there's a whole niche culture (PUA) built around this, and there are so many contradictory observations and prescriptions that I don't know that I even have a position on exactly what aspect of asinine behavior is sometimes attractive. I would note that it's not uncommon to see a girl devoted to a guy who seems self-loathing (as well as being a jerk, at least to her), so self-confidence is not always a major part of the picture.