Cool! He totally looks like in the game. It's funny the contrast in his behavior before and after marriage: At first he says that his sword worths more than you, and later he calls you dear and makes you dinner. In my savegame he's married to my Dovahkiin... a big male nord Dovahkiin.
He's married to my bosmer <3 I wrote a very poignant story as to what causes this big change in his personality from acquaintance to lover. I like to imagine once you become harbinger and you attend to him when he purifies his wolf spirit, that Vilkas just falls for you. It's a sweet concept, I think. Of course that doesn't mean he's an angel outside of game dynamics though X)
Oh yes! I think that too. In fact, I think DovahkiinxVilkas has one of the most deep and interesting love stories behind, in Skyrim.
Most of the marriable characters are like "Hi, nice to meet you, I need my item... Oh, you have it? I love you", but with Vilkas you have to work hard for some time, deal with his grumpy behavior, fight at his side, become his leader, and do a very meaningful favor to him at the end, everything with a gradual evolution in the way he treats you during the quest. It's definitelly something closer to reality.
And there's a lot of possibilities if we talk about Dovahkiin's reasons: Perhaps (s)he married Vilkas because (s)he ended admiring him for his skills and smartness, or (s)he may be softened by the fact that the boy, behind his tough exterior, hides a sensitive and passionate heart, or maybe Dovahkiin succumbed to his/her dragon instincts and married him to have certain dominance ("Vilkas, make me a sandwich!").