Read Sexual Sabotage by Judith Reissmann. It's a reframing of Kinseyism and the Sexual Revolution, showing that the sexual statistics on Adultry, Pre-Marital Sex, and Homosexuality which precipitated the Sexual Revolution, were colored by massive selection bias, and motivated by Kinsey's own rather perverse proclivities.
EDIT: I'm not calling you a liar. I'm just saying that the societal narrative that any of the things that you're suggesting were always prevalent is not so. Another book worth reading is A Generation of Sociopaths by Bruce Cannon Gibney. There are statistics on marriage and divorce between the Greatest Generation and the Boomers that are insane. The average GG partner count was 1; the average for Boomers was 15, and has been going down ever since.