Hello everyone!
Just a little bit of an update of how landing went. First, I realize this process can be different for everyone, but I just wanted to let you all know about our experience.
He landed in Montreal, and the immigration line was quite long. Waiting time and processing took him about two hours total. One of the reasons that it took so long, was that we had booked this flight several months ago, and it was really supposed to just be a visit. We had booked a one-way ticket for him to come to Canada in June, as that’s when we thought we could reasonably assume that he would have his COPR.
As well, his PR is conditional upon cohabitation for the first two years, so when the officer noticed that he intended to return for 3 months, they starting questioning him. He had misunderstood what she had said, and though that he would not be able to leave the country for two years.
Eventually the officer called me and explained everything, so I told her that we would be changing our flight so that we will only be apart for 1-2 weeks.
Maybe I didn’t do my research on this topic, but I had never read anything about the 2 year conditional cohabitation. I called CIC who told me that as long as he doesn’t move back permanently and start working there, he should be okay. As well, him and I will be coming back to Canada together in June as we will be attending a wedding. We just already have to different flights booked and it would be too costly to change it at this point.
I did my research after, and if you have lived together for less than 2 years and have no children, the two years of cohabitation will apply to you.
Not that it is a big deal, the two of us are happy to cohabitate, its just that he left Poland with a lot of loose ends, thinking he would be returning for 3 months.
Good luck to everyone who's application is still in process
I will update you after we apply of when we get an answer 
