i read from some book that is becoz
Woman are generally attracted to the ride of rollercoaster emotions
,like sadness , betrayal , misery ,happiness,ectascy etc all rolled
in-to-1 , it makes them more alive coz living to them, is all abt
feeling.Hence when a badboy comes into their life , they are
naturely tempted by such potential emotions,why do u think woman
love korean soap operas and melodramas,love novels. It makes them
cry, smile and giggle. A bad guy brings out the 'woman' in
them.
I have seen many examples around my life ,esp the earlier stage of
our life , esp younger woman who want to experience the
rollercoaster of emotions.
But we all know such emotions are short lived and after a few tries
, a few years down the road , they have tried n experienced it all
and ready to settle down . Hence the nice guys comes along , but at
this stage most of them already married/divorced/turn gay or the
rest of left on the shelf.
I have also seen cases of early marriages which resulted in the
divorces, although having a endearing loving hubby , they were not
able to experience enulf of the emotional upheaval becoz of their
early commitment, hence a very potential break-away temptation
would be there for them.
Do u know how woman masterbate? they dont have images of naked men
humping etc etc like us men. BUt they visualize environment ,
feelings , emotions which turns them on.
So all in all, why woman cry and men lie.
But tats my 5cts worth 
personal experience, my gf loves me, but treats me like dirt..coz i
treat her like a princess
