A persons gender is usually clearly discernable. It is a threefold concerted effort between the chromosomes, hormones and sexual genitalia. When all these align a person will either be male or female. This however does not guarantee a persons gender culture. Gender culture you ask? Yes, gender culture. People's gender and reproductive sexuality develop from immaturity surround by a bubble of societal culture. A culture that lays upon a persons gender the requirements of its society.
It could be skirts for girls or kilts for men or body length shirts for boys and dresses for girls. Modern society has also allotted a portion of this gender culture for the non conformist in our society. Gender culture usually has some influence upon the development of a persons sexuality. Physical sexual maturity is discernable in a reproductive male or female by their compatible fertility. Gender culture however can influence the mental or emotional maturity of an individuals sexuality thus affecting the course of his or her sexual appetite.
Does a physically sexually mature male thus seek out a physically sexually mature female or does he resort to seeking his satisfaction elsewhere? This is the conundrum and perplexity brought about by gender culture. Gender culture can in fact affect sexual appetite. Change social constructs and rules and the trajectory of sexual appetite and development will change. Create enough social friction and what was once considered normal will be considered abnormal.