However, one particularity of the human species is that pair bonds are often formed without necessarily having the intention of reproduction.In modern times, emphasis on the institution of marriage, generally described as a male-female bond, has obscured pair bonds formed by same-sex and transgender couples, and that many heterosexual couples also bond for life without offspring, or that often pairs that do have offspring separate.Today, the institution of dating continues to evolve at a rapid rate with new possibilities and choices opening up particularly through online dating.The word "dating" entered the American language during the Roaring Twenties.
A few centuries ago, dating was sometimes described as a "courtship ritual where young women entertained gentleman callers, usually in the home, under the watchful eye of a chaperone," but increasingly, in many Western countries, it became a self-initiated activity with two young people going out as a couple in public together.
Cars extended the range of dating as well as enabled back-seat sexual exploration.
In the mid-twentieth century, the advent of birth control as well as safer procedures for abortion changed the equation considerably, and there was less pressure to marry as a means for satisfying sexual urges.
Prior to that, courtship was a matter of family and community interest.
Starting around the time of the Civil War, courtship became a private matter for couples.
New types of relationships formed; it was possible for people to live together without marrying and without children.