There certainly have been a lot of changes, although they come in such gradations that most people have either forgotten, or, if they're too young, they never knew about them in the first place.
Anyone who is in love is making love the whole time, even when they're not. When two bodies meet, it is just the cup overflowing. They can stay together for hours, even days. They begin the dance one day and finish it the next, or--such is the pleasure they experience--they may never finish it. No eleven minutes for them.