While analysts such as Harald Martenstein and others suggest that it is easier for persons to initiate contact in America, many Germans view the American dating habits as "unspontaneous", "ridiculous" and "rigid". Until the 1960s, countries such as Germany, Switzerland and Austria had a more formal approach for first contacts that was eased during seasonal festivals like carnival and festivals and funfairs like the Oktoberfest, which allowed for more casual flirts.
That's why some choose to enter into polyamorous relationships instead. When someone is polyamorous, that means they have more than one romantic relationship at a time. Often, polyamorous couples have a primary partner, a secondary partner, etc. with the understanding that these "rankings" can change as their individual needs do. Others treat every simultaneous relationship they are engaging in as perfectly equal. The key to any successful relationship, but especially polyamorous ones, is honest and effective communication between all parties involved.
Dating as an institution is a relatively recent phenomenon which has mainly emerged in the last few centuries. From the standpoint of anthropology and sociology, dating is linked with other institutions such as marriage and the family which have also been changing rapidly and which have been subject to many forces, including advances in technology and medicine. As humans societies have evolved from hunter-gatherers into civilized societies, there have been substantial changes in relations between people, 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.