Is patriotism necessarily related to nationality?

Yes, the person you loved must be the country where your nationality is located! Otherwise, it is not patriotism, but love for other countries. For example, an China immigrated to Canada, and his country after immigration is Canada. Patriotism means loving Canada. If he wants to love China, it is not patriotism, but China. Because he is no longer from China, we can only say that he is from China! Still Asian!