I am pretty sure it was the boyfriend, since it's in an area of the room that most people wouldn't normally walk to (next to the wall, somewhat in front of the closet)
I knew that it was there (It was inside one of my bags on the floor), and I'm pretty small, so I'm fairly sure that I would have noticed a huge crunch (basically the top...um...rod broke apart just below the ceramic plate, like a strong man came by and snapped it in half).
He's walked all over stuff in the room all the time, followed by expletives whenever he steps on stuff (he's broken quite a few hangers and things), but he's not about to admit to being the one who broke it. He's said he'll help pay for half of a new one, but those things are over a hundred bucks. blah.
I'm not completely crushed because I did a job for GHD a couple months ago, so I've got a GHD iron I've been testing out for the last couple months, but dangit, I still liked my CHI