Cars extended the range of dating as well as enabled back-seat sexual exploration.
As humans societies have evolved from hunter-gatherers into civilized societies, there have been substantial changes in relations between men and women, with perhaps one of a few remaining biological constants being that both adult women and men must have sexual intercourse for human procreation to happen.
Humans have been compared to other species in terms of sexual behavior.
Behavior patterns are generally unwritten and constantly changing.
There are considerable differences between social and personal values.
However, one particularity of the human species is that pair bonds are often formed without necessarily having the intention of reproduction.