So if I could prove that we lived together for 6 months in the US and then 6 months here in Canada with affidavits from both our parents would that help with the common-law?
Because right now I dont think conjugal would fly and we have no intentions of getting married for the time being but want to live together in Canada and start our life together as this cross border lifestyle is really starting to put a drag on us.
Yes, the 6 months in each location will be fine. Do be sure to provide all of the evidence you have that shows you've consolidated your affairs and have been in a relationship for however long. Try to think like a lawyer - show copies of receipts, bank transactions, rental agreements, etc. There's a list of these kinds of things on the CIC website.
You're right that the conjugal partner application won't work.