US visitor staying longer than return flight

[Mayflower90]

Hello, I am an US citizen staying with my boyfriend in Canada. I originally entered the country with a return flight of about a month out. I would like to stay longer in Canada to pursue a common law pr with my boyfriend. My question is am I tied to my month return ticket or can I as a us citizen stay for 6 months? I have no stamp or documents is a return date as it was all done electronically at airport. I was asked how long I intended to stay is all. I appreciate any guidance as navigating all the info is confusing!

Thanks

 

[scylla]

You can stay six months. Make sure you apply to extend your stay in Canada before the six months is over.