Hi
I don't want to give false hope, but I am guessing it's an approval. Though honestly, I don't see why, because you obviously weren't a common-law couple at the time you filed, since you hadn't been living together. Maybe conjugal, but not common-law.
However, I don't think I've heard CIC refuse an application without even a request for additional documents. If there's issues, they always give the applicant a chance to explain them. So... *shrugs* Seems weird that they didn't ask for an interview, they've asked for one for much less.
Whatever it was, the decision is made. Hope it's a good one and you hear the news soon. Good luck!
Just an aside, if a person applies for Immigration and they clearly don't meet the criteria, then there is no need for an interview.
PMM