Questions about common-law marriage usually centers on when it's recognized, where it's recognized, and even things like whether the parties in one can deny its existence.
What am I looking for here is help collecting information specifically about how various jurisdictions (particularly in North America) view a relationship in which the parties have explicitly, through legal action, dissolved their marital relationship but continue to live as, what might be considered, a common-law couple.
That is, a couple formally divorces, but continues living together. As far as I can ascertain, there is no "annulment" of a divorce once it has been entered. So at what point, and on what basis, can this couple be considered to be "common-law"?