Sophie Turner and Kit Harington star alongside each other as lovers in an upcoming film, 'The Dreadful'. The problem is, they spent eight seasons on 'Game of Thrones' playing siblings.

When Sophie Turner read the script for "The Dreadful," she knew she wanted to do the movie with "Game of Thrones" co-star Kit Harington. What she didn't think about was how "dreadful" their kissing scenes would become.

The actress, who played the Queen of the North Sansa Stark on the hit HBO fantasy series, explained on Thursday’s episode of Late Night that both she and Harington, who starred as Jon Snow, felt sick to their stomaches after shooting their first kiss scene together for the film.