my own personal experience is I think women adjust over time but don't forget. I had a relationship with an engaged gal, we met in a bar, every other wkend we met up. we kept doing this for sev'l mos. it was all about the sex. initially, she told me she needed a big cock. I said the fact you are with me tells me your fiance does not have a big cock and I do. correct. what are you going to to do when you are married to him. cheat??? not with me,you won't. we stopped seeing each other. she felt guilty, I felt guilty. a few months would go by and she would just show up. "pls fuck me, fuck me, fuck me." a few times I was involved with another female. man would she get mad. I had to straighten her out and send her on her way. other times, we fucked, fucked a lot. eventually, she married her guy, moved away, just got divorced after 30 yrs of marriage. not sure what that is about.
had another gf who broke up with me so she could date my friend. she lasted 2 wks with my buddy. I guess she ridiculed his size and compared his size to mine. he was quite upset that she dumped him as he considered himself a real stud. I found this out from her. she claimed that I had ruined her for life, that she automatically compared all men to me. I guess after having ho hum sex with my buddy a few times, she started laughing at him the next time they went to have sex. she said something, he slapped her, she put her clothes on & left and that was that. I heard this from her over a cocktail, punctuated with the occassional, "you big dicked bastard" and a poke in the ribs. I even tried to date & fuck her again, but she resisted. a couple days later, I ran into him, upset and almost crying over their break up. I told him, no sympathy from me dude, you stole my girl. he told me she ridiculed him, and he demanded to know what I had in my pants. I told him I was bigger than average. he demanded that I whip it out and show him. (which I didn't do)I guess he couldn't believe he wasn't a stud or somebody could be bigger.
after about 4 yrs of me & the SO being together, SO forgot that not all men are hung and their mates sexually satisfied. a gf came to her very upset that her bf and her weren't getting along, part of the problem was she was not satisfied. the gal wondered what our secret is. they talked for awhile. the gal wanted to know if my SO had a desire to cheat. SO told her no. the gal said don't you secretly want to find the BIG one. at that point, SO said no, she had found and marred the BIG one. when I got home, I got a big kiss, a crotch grab, and an apology for taking me for granted. then I got the whole story.
the bottom line is I think there are more ways to make a woman happy than by just having a big dick, they are complex cratures.