Contrary to popular belief, men aren't just interested in how you look. That's what a large 2010 study revealed after analyzing how attractive a collection of over 2,100 male university students rated a series of women from their photographs.
One group of men were given the photos and nothing else. Two other groups were provided the photos along with information about the women's personalities — one group had mostly positive personality traits and the other, mostly negative.
The researchers discovered that the group with mostly positive personality traits found more women attractive overall than the other two groups. So, when you're on that first date, just remember to be positive!