Doctor Whoand her character Clara, his new assistant.
The actress was seen snogging the Time Lord, played by Matt Smith, in the Christmas special - and makes her proper debut as his assistant when [uuid=5a24b8c8-8202-471f-81d9-21439b032d17]the current series resumes[/uuid] with The Bells Of Saint John on Saturday.
She told Access Hollywood: "I think - well - we start series seven and it's very much like - we haven't met this Clara before, so we start the story again.
"So, what happens in the Christmas episode doesn't necessarily carry on through.
"I think there's definitely always a certain level of kind of a frisson and a flirtation and kind of a form of attraction always between the Doctor and his companions.
"She's pretty feisty - especially in the Christmas episode - she fancied the Doctor. She was intrigued by him and she was curious. She wanted to know more, but also kind of likes to make fun of him at the same time."
And she also revealed that she and co-star Matt had enjoyed filming [uuid=28745069-2e0b-46b9-bd54-ae8ef7b8805c]the snogging scene[/uuid] for the Christmas special - getting lots of takes in.
"We had a brilliant day, because it was basically a game of 'How many different reactions can we get to the Doctor being kissed'," she explained.
"So there should be loads of outtakes I think, so it was kind of like the Doctor kind of enjoying it a bit, which has never been seen before and then in true kind of Doctor-style, him kind of flailing and not quite knowing what to do. So there should be a load of outtakes from that day."