Not in the least, part of this also has to do with what John Money called a "love map" it dates back to things in your childhood that click with an "ideal lover" image and you create associations with those things as you get older. That's not to say that such things are definite but if other qualities begin to balance out and they fit your "love map" to a certain extent it can become a major point of attraction, and could essentially be called "love at first sight", although it is a sort of building love if you will rather than something that hits you all at once. Keep in mind though that your "love map" can also work against you and you could be turned off by someone for no apparent reason as well, especially if you have been abused in some way as a child.