Women like sweet/nice guys. Oh really? Lets look at actual popular smut for women. (romantacy and erotica)

ACOTAR series: Tall, dark and handsome

Fourth Wing: Tall, dark and handsome

The Cruel Prince: Tall, dark a handsome (also a bully)

Dramione fanfiction: Bad boy bully

50 shades of Grey: Tall, dark and handsome

Twilight: Dangerous, mysterious vampire

"Dark" in this context means being dark-haired or metaphorically being edgey, a bad boy.

Oh and we´re talking about young women, not about 40 yo single moms who are looking for a nice guy provider to settle down. Like come on.