lubojart said:
Yeah but the idea was him moving back in with me once that lease was due. Instead, he decided to get a girlfriend who threatened to kill me, so what was I supposed to do?
The point of C51 is that you have to cohabit together as a couple. It doesn't matter what happened after you stopped doing that. You moved out, you were in breach. You may get away with it, but if you ever deal with CIC again, they may discover from your address history about you moving out while the condition applied.
TBH, I think you were closer a week ago when you were talking about renouncing your PR (as you don't meet the conditions you agreed to), and having your new partner sponsor you.