Justin Bieber Admits To Being Bi-Sexual And Is Caught Making Out With New Boyfriend Austin Mahone MIAMI – Controversial pop singer Justin Bieber has publically admitted via Twitter that he, in fact, is “Bi-Sexual” and dating singer Austin Mahone. Justin Bieber 'to be better boyfriend' to Selena Gomez Paris Jackson says 'I guess' when fans ask if she's bisexual as she's quizzed about . The latest Tweets from Justin Bieber (@justinbieber). Let's make the world better. Join me on @bkstg at 'justinbieber'. PURPOSE OUT NOWAccount Status: Verified.