In the three major cities (Vancouver, Montreal and Toronto), it’s quite common to see women dating second gen immigrants from various cultural backgrounds. If they’re not particularly religious, or they share the same religion then it’s pretty much a regular thing that doesn’t even register as different for most people. No one seems to bat an eyelash over mixed races couples here.
Small town Canada, less likely but also less diversity.
That said, I can see it being more difficult for first gen immigrants in the major cities. Canadians have a lot assumptions about immigrants from certain backgrounds, esp backgrounds that are not seen as liberal or open minded. Second gen immigrants are seen as more likely to be liberal than first gen and hence, hold more similar values (not saying that’s necessarily true but it’s what many Canadians assume until proven wrong).