This is Canada. You can be common-law or get a man to marry you.
It's very irresponsible of you gentleman to be encourging love solely based on citizenship. It encourages Immigration fraud.
Immigration fraud is a criminal offense in Canada. If you, OP, decide to commit it, you face rejection of your PR/citizen status and deportation with a permanent ban.
This is becoming a hot issue in Canada and already 3000 people have been selected for deportation to due to Immigration fraud. Canadians are demanding protection against fraudsters and reporting their criminal activities to Immigration. We do NOT want criminals in Canada. We want honest PRs and citizens.
OP, I suggest you look into ways to legally immigrate on your own merits to Canada. There are many different classes. Depending on your education and skill set, you may find you don't need anyone but yourself.