they just say they don't like it but deep down they do.
There is truth in that.
Women tend to be deliberately coy about their sexuality. They say and do what they think society expects of them. Women have been taught for ions not to be sexual, not to give it up easily. To be prudes. (And a lot of them are through and through. They have drank the koolaid. And once patterns have been imprinted on the brain from a very young age, they are almost impossible to overcome.)
Ever watch how when women are together and the topic of sex comes up in conversation they will typically say what they think is politically correct with respect to sex. One woman will lead the way with some conservative answer and the others will, of course, all agree in one form or another. Rare is the woman who speaks her own mind when in the heard. Ask a group of women at a dinner party if size matters and they will all say no and some lame shit about, "motion of the ocean" . But pour 3 glasses of red wine in them and ask the same question and then the truth will come out. Then you'll get, "well I used to have this boyfriend who was 8" cut and thick and I have to say I loved getting fucked by his big cock" (as she twirls her Pasta but doesn't eat it) and then the others giggle and and nod in agreement.
It's the same with dick pics. They will say they don't like them and that it's obscene, but they look, they notice, and they save the pics. The only caveat is that they typically don't want them from guys they aren't interested in (at some level). But they probably will save those too just in case they need to use it as a weapon in the future.
Women drive men crazy because they never just say what they want and even when they do, you're never quite sure it's what they really want. (Save and except shopping. They are up front about that.)