Please do some research before you comment. There is an area in your brain called MPOA - Median pre-optic area. It is small in women and large in men. In gay men, it is of intermediate size so so is it in lesbian women. May be that area holds the key to the behavior. (please refer to works related to Dr. Elanine Hull for further details on dopamine release and MPOA and sexual behavior). No offense - but please do your research before you comment.