I think in the past various religious values used to impress a certain amount of prudishness and resistance to sexual relations such that romantic feelings would develop before physicality. Whereas these days those values and the "save yourself for the one you love" attitude fell by the wayside as a result of secularism.
Add on top of that the fact that everyone is horny af and that's mostly normalised as fine and ok and well there you have it. People get physical fairly quickly, within the first 1-14 days, whereas love takes months to develop or people put up barriers to actively avoid developing those romantic feelings after previous negative experiences (self preservation after how much it hurt).
I'm speaking strictly of the west here of course, I don't have enough experience outside of it to say how different things might be elsewhere. I would expect things trend in the same direction outside of the religiously-led countries though.
I think in the past various religious values used to impress a certain amount of prudishness and resistance to sexual relations such that romantic feelings would develop before physicality. Whereas these days those values and the "save yourself for the one you love" attitude fell by the wayside as a result of secularism.
Add on top of that the fact that everyone is horny af and that's mostly normalised as fine and ok and well there you have it. People get physical fairly quickly, within the first 1-14 days, whereas love takes months to develop or people put up barriers to actively avoid developing those romantic feelings after previous negative experiences (self preservation after how much it hurt).
I'm speaking strictly of the west here of course, I don't have enough experience outside of it to say how different things might be elsewhere. I would expect things trend in the same direction outside of the religiously-led countries though.