I've noticed more and more in the past few years that about 1 week per month I find myself kinda attracted to and noticing women. It seems to always be the week just after my period. I've never actually slept with a woman, but I just find myself turned on by hot chicks during that time.
The rest of the time, I'm after guys only. I don't really understand it but it's happening every month. Oh well, just thought I'd share!