Filming the Harry Potter saga did not only allow many young actors to launch their careers - those years spent together on stage also forged friendships, as well as romantic relationships!Evanna Lynch and Robbie Jarvis had a great love story. While the names of these two actors may not ring a bell, you probably remember their characters in the movies in which they starred alongside Daniel Radcliffe, Emma Watson and Rupert Grint.Evanna Lynch played Luna Lovegood in four of the films and Robbie Jarvis played the young version of Harry's father, James Potter, in Harry Potter and the Order of the Phoenix. They started dating in 2007 but didn't make their relationship official right away. They waited until 2015 to make their love affair public!The two actors sadly separated at the end of 2016, after being in a relationship for nine years. On the actress's Instagram account, they are seen together in many pictures. At the New York premiere of Fantastic Beasts, Evanna Lynch told US Weekly that they were "still friends".Other couples formedAlthough their relationship was particularly long, these two actors aren't the only ones to have met their other half thanks to the film adaptation of J.K. Rowling's novels.Bonnie Wright, aka Ginny Weasley, and Jamie Campbell Bower, who played Gellert Grindelwald, also fell in love on the set of the Deathly Hallows, Part 1. They even got engaged in 2011, but eventually broke up in 2012.Take a look at the video above for more on the Harry Potter stars' relationships!