Yeah this whole "nothing ever changes, every generation is the same" nonsense is just ridiculous. These people who insist casual sex was always a thing don't seem to realise that contraception is a pretty recent invention. Before birth control the vast majority of women were too afraid of getting pregnant to just sleep around with strangers, they'd have sex with their boyfriend eventually but not with some random guy they just met like we do. And then her boyfriend would probably get her pregnant and - shotgun marriage. Because of that, most people only had one or two sexual partners in a lifetime.