They’ve used every cliché in the book, describing each other as “family”, “best friends” and “great” people – anything to avoid confirming a relationship. But Selena Gomez and Justin Bieber let actions speak louder than words (again) Sunday night when they turned up together at Vanity Fair’s post-Oscars bash. Gomez, in a red Grecian gown by Dolce & Gabbana, and Bieber, in a black tux – with a