The two grew very close while on set of their hit show, Game of Thrones, and Clarke has since helped Harington stay on the right track.
“She’s very good at keeping Kit in line and out of trouble because he respects her and besides that she’s tough and one of the wisest people on the set,” a source told Radar. "He listens to her when she tells him to slow down and stay focused. He doesn’t drink half as much as he used to, if at all."
Clarke, 32, also has the stamp of approval from Harington’s wife, Rosa Leslie, 32, who trusts her to watch after her husband.
Readers know Harington, 32, made headlines for getting kicked out from Barfly, a pool bar, in NYC, but the world knows him for his role as Jon Snow on GOT.