Here is my questions, it really struggles me a lot. Wondering if someone can help.... 
1. I and my gf have started our relationship since Feb 2020, and we never live together and getting married. At May 2020, I applied Entry Express in Hong Kong as a single and got drew for PR in early of June. 2020. And due to COVID-19, it takes 2 years to make final decision on my application and at the time we are planning to marry. In this case, before we are married, do we considered to be a common law couple (never live together)?
2. By the case of question 1, do we married after landing or before landing would be the better option? If we married immediately after landing, do we make a impression of faked marriage for CIC officer? Will it be more difficult to apply sponsorship program for my gf and have negative influence to my PR status?
Thanks

1. I and my gf have started our relationship since Feb 2020, and we never live together and getting married. At May 2020, I applied Entry Express in Hong Kong as a single and got drew for PR in early of June. 2020. And due to COVID-19, it takes 2 years to make final decision on my application and at the time we are planning to marry. In this case, before we are married, do we considered to be a common law couple (never live together)?
2. By the case of question 1, do we married after landing or before landing would be the better option? If we married immediately after landing, do we make a impression of faked marriage for CIC officer? Will it be more difficult to apply sponsorship program for my gf and have negative influence to my PR status?
Thanks