Your spouse, whether common law or married, will not be affected by your bankruptcy if he or she is not responsible for any of your debt (did not sign an agreement or contract for any of your debt). If they have a supplemental credit card they are probably responsible for that debt. Your spouse's credit rating will not be affected by your bankruptcy and any assets in the spouse's name will not be part of the bankruptcy.
If your spouse is responsible for any of your debt, or has his/her own debt, then the spouse may have to file bankruptcy too.