Dating became synonymous with dancing as dancing on the first date was considered for a more serious relationship.
Dating became common among high school students during the 50s and the 60s as there were more weekly dating, exchange of phone calls and physical intimacy which led to early marriages among couples.
The late 1800s saw a transition in dating as it became more formal. At this time dating was synonymous with romantic relationship or courtship.
In the early 1900s dating between couples were supervised by their parents.
Essentially uninterested commitment-phobic boys instant message highly available girls (with no standards late at night) asking them if they want to participate in what is essentially a non-date.