THERE MAY BE A REASON - or at least something you could use as an excuse.

Dr. Kristina Durante of The University of Texax at Austin has been doing a study, and found that "women with higher estradiol reported a greater likelihood of flirting, kissing and having a serious affair with someone other than their primary partner." So having more estradiol (oestrogen) makes one more likely to sleep around then, no?

According to Durante and her colleagues, "high-estradiol women were considered significantly more physically attractive by themselves and others." So they're full of themselves too, eh? 

So, if you think you're hot, others think you're hot and you like to slut around, you may have higher levels of oestrogen than the rest of us. Congrats! Now you can blame your affairs on your horomones!