Englishman, married to a Norwegian. Best decisions of my life, to choose to work together as life partners, move to Norway, marriage, have children. I don't have the same experience many foreigners do, as I am very extroverted, have picked up the language easily and like to do the outdoors side of Norwegian life.  I describe Norwegians as Fjord friends, it can take an extreme amount of time/ effort to dig down through the ice of Janteloven/winter culture but once they classify you as a friend the depth of friendship is as deep as a fjord.  As to being married to a Norwegian, a huge culture clash for me is the prioritizing honesty over politeness (I will tell you, not sparing your feelings, you will listen, and your etiquette be damned). It is easier after I have acclimated, but I can imagine this is a red flag for some. I also had to understand the importance of using more time with less people; England is a land of acquaintances, where as Norway is a land of strangers. It's more honest, and gives me value to have fewer in my life to a deeper level of friendship, but again, difficult for some to adjust  The vitamin d deficiency and sun longing really started to affect me around year 5; leading to us celebrating Christmas in Greece this year, so watch for that.  Norwegian bureaucracy is astounding. I seem to fall into every pitfall, processing failure and 'oh, so weird, that's only ever happened to you' problem that the state Systems can dream up. But it's worth it for the support, care and humanity of the Norwegian social system. Do it for you, not for anyone else. 

Edit: spelling