It can be a form of courtship that consists of social activities done by the couple.
The protocols and practices of dating, and the terms used to describe it, vary considerably from country to country and over time.
"A casual date is an evening, a meal, or a get-together of some kind in which there is no expectation of further commitment on either side.
These people will have dates on a regular basis, and they may or may not be having sexual relations.
Time spent together is coupled with waves of texts that keep you interested because that someone is interested and you’re all having a grand ole’ time.
Over text messages you share humorous commentary of your day, make topical jokes to prove your intelligence and make vague plans to see each other again.
However, the idea of a casual relationship is another way of saying "friends with benefits." This is a friendship between two people that allows sexual intercourse. There's no need to mess around with with sadness, jealousy, or any other pesky emotions that are found in typical relationships.
During this, you are fullfulling your sexual needs.