Everything is fully possible. The problem is, as I see it, its Danzig on the first pic, whom maybe has some look alikeness to a Maine.
While Von, the girls fiancée, although very pretty hasnt the apparent look alike similiarity... I cant really tell anything for just one part body photo where I see only the head and the tail, but the head reminds me of a typical nice shorthair, + a grandious tail to it...
He's gorgeous. Love his markings. After my sister adopted a Maine Coon (Jasper) we were looking in a cat breed book and comparing them to the Norwegians. They do look very similar. If I remember correctly the profile of the Norwegian's face was fairly straight....from the forehead down the nose....and the Maine Coon had a small dip on the end of the nose. I think the Norwegian's head shape was more triangular too.