As long as you weren't common-law or married as of the time he landed as a PR in Canada as single, then you will be fine. Since you have never lived together for 12 months you are just boyfriend/girlfriend right now, and that status is not very important to CIC.
Once you come to Canada you can get married or live together for 12 months, and then apply for your PR. If living together, make sure to remember to keep proofs and evidence that you are actually living together, and try to get a joint bank account or joint credit card as soon as you arrive in Canada.