The 31-year-old actress bowed out of the fantasy drama series - on which she played wildling Ygritte - in season four but she's still an ''avid fan'' of the programme and is looking forward to seeing how the show will end in 2019.
However, Rose is so determined for what plays out on screen to be a surprise, she won't even let her fiance - who plays Jon Snow - read his scripts in their house as she can tell from his facial expressions and body language what is going to happen.
Speaking to talk show host Seth Meyers, 'The Good Fight' star said: ''Talk about being an avid fan, I obviously am of 'The Good Wife', but with 'Game of Thrones', I'm like the rest of the world. I'm waiting for the new and final season.
''I remember over the summer obviously the new episodes for the final season were coming through onto his iPad. I can read his facial expressions. I don't want to know anything that's going on within his eyes, so I sent him packing.
''I kind of boot him out so that he can go to the coffee shop, because I can gauge. If he stiffens, it's like, 'Ooo someone's dead.' And then my mind goes off.''
Rose also revealed Kit used a prop from the show to prank her last April Fools' Day by storing a fake severed head in their fridge.
She explained: ''I had just wrapped from season one of 'The Good Fight', so I had been in New York for about six months.
''We hadn't spent a lot of time together, and then I go home and the b*****d puts this in the fridge. Horrible, horrible. I fully screamed...
''I went downstairs to the fridge and I was chatting at him, I don't remember him holding up a phone because he took a video of the whole thing, but I thought he was texting and speaking to me.
''As I turned my attention back to the fridge, I see this terrifying head staring back at me, I didn't necessarily recognise it was him, I just know someone is bloodied in my fridge, hairy, urgh, horrid.''
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