Sweden is one of the richest countries in Europe. They developed a perfect system for their citizens which is why people often want to immigrate to it. If you are married to or in a relationship with a Swedish citizen (in my head I was automatically going to write ‘Swedish Model’ and had to catch myself), you can apply for Swedish citizenship. But being married isn’t enough to go the full mile. If you are a newly wedded couple, you’ll have to live together two years before applying for citizenship.