A gift of nature to them.And most respectfully to you,I'd say that when it comes to romance,I never link the word stuff to it.When they love,its really tender,just like they are.
or to be more precise, socio-biological reasons - that is as long as you are asking the question in an objective scientific way
its the fairy tail princess effect,
after ten years I fine its best not to question it I just go with the flow whatever makes them happy.
some men are too...find me one :P
u offering huh xx:P