I think the availability of the pill changed sexual behaviors immensely. Sex came out in the open. At that point people did talk about sex and not just girls among girls. There was a freedom to talk with boys about sex, because you weren't defining yourself as a bad girl anymore if you chose to be sexually active or to talk about it. Those categories didn't apply as much. At least they weren't the assumption like they had been even five years earlier. So that you could still think of yourself as a nice girl and a girl who had a future, and a girl who intended to have a career, and talk openly with boys about sex ans whether you intended to have sex with him or anyone else for that matter...