Having someone to be in love with is not the CAUSE of our happiness. Rather it is a manifestation which feels so good to focus on that it becomes AN EXCUSE to focus positively. It is the positive focus which is responsible for the feeling of happiness. But whether or not we have or don't have the excuse to focus positively, we still have the power to focus positively on what we have instead of on what we don't have. And the result will be... joy.