thanks. i did more research about the law
- 40(1) A permanent resident or a foreign national is inadmissible for misrepresentation
- (a) for directly or indirectly misrepresenting or withholding material facts relating to a relevant matter that induces or could induce an error in the administration of this Act;
- (b) for being or having been sponsored by a person who is determined to be inadmissible for misrepresentation
40 (1) (a) applies most of the misrepresentation situations. The key info would be material facts. relevant matter that
induces or could induce error in the administration
This is precisely my point - if you had been common law with a citizen, it wouldn't have 'induced an error' (beneficial to you - they mostly don't care about things that would harm your file, because that's your problem.)
Also note the (b) - which is what they apply to make undeclared spouses ineligible (i.e. they don't typically apply separate sanctions to the PR who didn't declare a spouse, especially retroactively).
And then, even if it were to come up, you'd have the factual argument that you weren't in a relationship then. But the factual question is moot because no
material fact misrepresented.
But again most importantly: stop researching this aspect and actually download the forms and look at them. I think you'll see there is precious little info required about your spouse and his address history there anyway.
So on so many levels, this is almost certainly a non-issue in your case. If you want more certainty, hire a lawyer.