I'm not sure about that, either. It's common to see Gen Z made uncomfortable by the intense flirtation and amorous pursuit shown in so much classic cinema, because that kind of sexual behavior is declining in developed countries (plausibly due to, among other factors, the ready availability of porn as a way to blow off steam, and the greater risk in the social-media age of getting one's reputation tarred if an advance proves unwelcome).

True. Just look at the graffiti in Pompeii and by Romans on the pyramids etc.