from my experience they are just as bad as men but it tends to be shitty books like 50 Shades of Grey. My last girlfriend acted all innocent and sweet when I first met her, saying she had hobbies like horse riding and all that typical good girl stuff but after being in my house for 30 minutes the second day we were together she was asking for me to get my cock out and we ended up fucking. She also was addicted to "erotic novels", sometimes she would say things which were so dirty in sex I would almost cringe a bit lol.
Women are more perverted than men they just hide it.