Thanks again for the knowledge and your input!
So I'm assuming my airplane ticket is insufficient proof of me living with my boyfriend?
The only thing I have is a gym membership and an indoor trampoline park I signed under his address.
I don't have any of the proofs you stated considering I'm just staying as a visitor, so I've never applied for any mailing or bank/credit card statements. I don't qualify for any payslips, since I can't work. Not sure about the rest.
So does this mean that I'm unable to prove that I've been living at his place for a year?
A plane ticket shows you came to Canada. It does not show in any way that you are living with your partner. The gym and park membership could count but if that is all you have, likely not.
Even if you started collecting proofs now, you would need a full year of solid evidence, which would mean end of next year.