Justin Bieber held on tight as he planted a big kiss on girlfriend Selena Gomez in Hawaii on Thursday. The two have been all about going public with their PDA, and Justin Bieber also kissed Selena Gomez as he headed up to the stage to accept a statue at last Sunday's Billboard Awards. After the show in Vegas, the two were off on this romantic getaway in Hawaii where bikini-clad Selena Gomez and shirtless Justin Bieber wasted no time hitting the beach together. The young couple have a chaperone with them for the trip, his mom, who was along when they went paragliding in the afternoon. Still, that didn't stop them from getting especially hot and heavy in the ocean, where Selena straddled Justin for another makeout session.