Kit Harington has been in an on-and-off relationship with Game of Thrones co-star Rose Leslie since 2012, which was also the year her character was introduced to the HBO show. By now, they are definitely "on" and engaged.
These On-Screen Couples Were Also Together in Real Life
Katie Holmes and Joshua Jackson starred as "Joey" and "Pacey" in Dawson's Creek and also fell for each other in real life. Too bad their love only lasted for one season, from 1998 to 1999, while the show went on for six. Jackson is single these days, while Katie is dating the actor Jamie Foxx.