Or by weather, climate etc? In my case it seems too a bit, I suffer from Seasonal Affective Disorder and I tend to have a more melancholy mindset in the fall and early winter which I feel leads me to seek romantic interests more, in the summer I think I seem to prefer somewhat rounder (not fat) women and sex is more often on my mind
I'm taking the last two years only into consideration, has anyone here noticed a similar phenomenon amongst themselves?