If it helps you, I was in a similar situation. Whirl wind romance. Ended up marrying my boyfriend after only a couple months together because we wanted the option to live in the same country (he is australian). We ended up getting married, but after doing a lot of research decided it was too risky to apply for sponsorship after having such a short relationship- I really didn't want to get denied and then be in a situation where it would be difficult to live together, didn't want to get accused of fraud etc. He instead came to Canada on a working holiday visa (IEC) - which involves a work permit so it was perfect. He then renewed his IEC after two years (you can't do that anymore, but before they allowed for repeat IEC visas). Long story short, we just applied for PR after being married 3 years. Now, we have lots of proof of our shared life together and even though it was a whirlwind at first, i am glad we waited to apply because now our application is very straightforward and i feel confident it will move forward with ease. Just wanted to share in case it helps!