Maybe they’re not acting.
TMZ reports that the couple were recently spotted on a dinner date in London, holding hands and kissing.
Or maybe they’re just researching their roles? When “Game of Thrones” returns to HBO in March, the fiery redhead, who also played housemaid Gwen in “Downton Abbey’s” first season, will — spoiler alert! — seduce the Night’s Watch spy into breaking his vow of chastity.