Everyone is searching for great love. But in doing so, are we perhaps overlooking friendship? Science shows that friendship is an extraordinary force. It shapes our identity, strengthens our well-being, and even has the potential to extend our lives. But what determines with whom we become friends? Why do friends become almost magnetic during adolescence? And: does friendship still stand a chance in times of growing loneliness and digitalization—or is it precisely the glue that holds us together?