We kind of already knew that, but it's always nice to get some confirmation from the horses mouth, so to speak.
Yesterday, Andy Cohen got Chloe Grace Moretz to 'Plead the Fifth' - which essentially means he asks her a load of prying questions and she can plead the fifth if she doesn't want to answer one of them. As it happens, she eloquently rebuffed questions regarding what she would say to Kim Kardashian should she find herself stuck in a lift with her. She also defined what she meant when she disliked the term 'Swift Squad' because it perpetuated exclusivity.
Then, finally, he got to the Brooklyn Beckham question - which she obviously saw coming considering Cohen also asked her pretty much the same question back in 2014... Making reference to that interview she admitted she was being "shady" at the time, and - this time - she'd like to set the record straight: "We're in a relationship... I think the more I don't make it mysterious the more people don't care, so yes we're in a relationship."
About a week ago, Brooklyn posted this pic to his Instagram of him kissing Chloe's head - which is all the confirmation anyone needs.