As I said in the episode thread, the changes they made to Robb's story this year just strike me as monumentally stupid, and, given where this is leading, stand to potentially derail the plot of next season in terms of narrative sympathy.
Robb's situation in the books was an understandable result of a sympathetic moment of weakness and the Starks' traditional ideal of honour above all else. Here, he's a fucking moron and doesn't merit an ounce of sympathy. Frankly, Lord Frey, at least, deserves to skewer him like a pig after this. And turning this all into some True Love nonsense speaks to a complete lack of understanding about what the original story was about.