Justin Bieber and Selena Gomez stayed close as they touched down at LAX together this afternoon. The singers hopped on a flight today after last night's Billboard Music Awards in Vegas. Justin and Selena kissed on camera during the show, which saw him take home several statuettes, and sat side by side as a steady stream of pop stars took the stage to perform. The duo initially kept coy about their relationship, but have opened up over time about their new romance. They also got cozy at Vanity Fair's Oscars afterparty in February and held hands as they celebrated Justin's 17th birthday with a romantic dinner in March. Selena joined her boyfriend in Nevada for his winning night after wrapping her new music video for "Love You Like a Love Song" in Malibu on Friday. The shoot included pink-painted horses and a long-haired male model, who stood in for Selena's real-life leading man on the set.