Attraction Cycles

So, as I started thinking back to the kinds of girls i found myself attracted to over, let's say, the past year. I have noticed a pretty distinct pattern of progression which has only now reached full circle. Approximately a year ago, I was attracted to brunettes. It seemed all of the girls I'd find attractive in my classes, in movies, on the streets, etc. would have brown hair. Then, I noticed a distinct change. I found myself attracted mostly to blondes. I don't remember when it happened exactly, but I definitely remember looking at certain blondes I knew in a different manner than I had before. Then, around mid-spring of this year, my tastes and attractions seemed to lead me to redheads. Both in movies and among my acquaintances, I realized that I was only really attracted to redheaded girls for a while. But, now, I find myself being attracted to brunettes again. A few here and there in my classes, another specific one not from one of my classes. I tried to google this "phenomenon" but had no luck finding anyone else with this type of thing.... Hmm, who knows?