Tittle says it all, after you marry your companion, in my case Nadia Grell, thats it?, she doesn't talk to me ever again?
lol @ the above responses but ill answer the question. Basically yes you finish the story arc and that is it until more is added.
Personally what i did was get vette up to the "marriage" point and then i went after the other love interest and got HER to the marriage point. Then the old "choose one" cut scene comes in. At which point i just backed out of the conversation so i dont make the choice until more is added in afterwards