But, the art is so complex that scientist Sheril Kirshenbaum has written a book about it. In The Science of Kissing: What Our Lips Are Telling Us, Kirshenbaum writes that men see kissing “as a means to an end” and possibly with a “view to swapping other bodily fluids later.”
Women try to “extricate the significance of a relationship based on a single kiss and often that leads to miscommunication.”
Men are more aggressive kissers, as they are trying to pass on a “testosterone bomb” to a lover. However, testosterone passed on during sessions of smaller but frequent kisses stays in the body longer, and can push a woman to falling in love more quickly.
The author, a researcher at the University of Texas, measured the magnetic current in brains of men and women in response to images of people kissing.