Forget the Facebook status update: Celebrities make their romances official with the red-carpet debut. But some wait a bit longer than others! Sophie Turner and Joe Jonas, who have been dating for almost two years and engaged for one, made their first joint public appearance on Oct. 2, at the Louis Vuitton fashion show in Paris. “With my love,” the Game of Thrones star, 22, captioned an Instagram photo of herself cuddling with Joe, 29, at the party. (Thanks for clearing that up!) Meanwhile, it’s obvious things are finally getting more serious between on-off couple Katy Perry and Orlando Bloom. The actor, 41, has famously been pictured hanging out (literally) naked with the singer, 33, since they first hooked up in early 2016, but on Sept.…