>>> If we take the assumption that normal attraction is a man attracted to a woman and a woman attracted to a man, >>>
speaking purely philosophically, you can’t 100% make that assumption because no man is attracted to all women and no woman to all men - so right there you have the start of the breakdown of your equation.
Where do we draw the line? Men who like women with shorter hair? Men who like athletic women versus feminine women? The point is, if you are married to a buxom blonde -because that’s what attracted you years ago - but become strangely attracted to a thin small breasted brunette, it is not proper to act on it because you are married. If you do, it’s a CHOICE even though the new strange attraction to a different type of woman is perhaps not a choice.
So it is in that sense that urge is irrelevant, in the sense that we have the choice of acting right or wrong in all areas of life regardless of our urges. As I said, I am speaking in the philosophical sense. Don’t we all have urge that are not choices but our choice to act or not is just that, a choice.