“Courtship” is the old fashioned name of this type of dating. During a courtship period, couples are allowed to gets to know each other. The main purpose is to decide whether they should get married or not. Most of the time dating is informal and private. Some time it also has been seen families or community is involved. Most of the cases, a commitment for an exclusive relationship with the other person is there to make this decision.
#18 The love-hate relationship. There’s loads of chemistry and sexual attraction in this relationship. But as much as there is love and passion, there’s the same amount of hate and frustration. Both of you are crazy about each other, and yet, can’t stand each other at times. This can be fun for a while, but unless both of you fix the issue, it’ll start to get very tiresome in the long run.

Dating can happen for people in most age groups with the possible exception of young children. Teenagers and tweens have been described as dating; according to the CDC, three-quarters of eighth and ninth graders in the United States described themselves as "dating", although it is unclear what is exactly meant by this term.[175] A 2018 study in the Journal of Youth and Adolescence found that serious dating among teenagers can negative affects on a teenager's mood. This is most likely due to the incomplete cognitive and emotional development of teenagers that cause a lack of ability to handle the challenging aspects of romantic relationships.[176][177]
Humans have been compared to other species in terms of sexual behavior. Neurobiologist Robert Sapolsky constructed a reproductive spectrum with opposite poles being tournament species, in which males compete fiercely for reproductive privileges with females, and pair bond arrangements, in which a male and female will bond for life.[4] According to Sapolsky, humans are somewhat in the middle of this spectrum, in the sense that humans form pair bonds, but there is the possibility of cheating or changing partners.[4] These species-particular behavior patterns provide a context for aspects of human reproduction, including dating. 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. Thus, the concept of marriage is changing widely in many countries.